...
Abbreviation/acronym | Digital NOTAM format | Meaning | Rule | ||||||
|---|---|---|---|---|---|---|---|---|---|
A/A | a/a | air-to-air | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
A/G | a/g | air-to-ground | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ACCID | aircraft accident | notification of an aircraft accident | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ACFT | acft | aircraft | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ACK | ack | acknowledge | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ALTN | altn | alternate (aerodrome), alternating (light colour) | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
APCH | apch | approach | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
APRX | aprx | approximate or approximately | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ARR | arr | arrive or arrival | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ASAP | asap | as soon as possible | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ASPH | asph | asphalt | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ATTN | attn | attention | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
AUTH | auth | authorized, authorization | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
AUTO | auto | automatic | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
AVGAS | avgas | aviation gasoline | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
AZM | azm | azimuth | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
BCN | bcn | beacon (aeronautical ground light) | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
BDRY | bdry | boundary | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
CHEM | chem | chemical | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
COND | cond | condition | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
CONT | cont | continue(s) , continued | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
COOR | coor | coordinate, coordination | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
COORD | coord | coordinates | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
DCKG | dckg | docking | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
DEST | dest | destination | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
DIST | dist | distance | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ELEV | elev | elevation | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
EQPT | eqpt | equipment | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
EXTD | extd | extend or extending | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
FAC | fac | facilities | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
FAX | fax | facsimile transmission | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
FCST | fcst | forecast | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
FM | fm | from | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
FREQ | freq | frequency | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
FRNG | frng | firing | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
G/A | g/a | ground-to-air | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
G/A/G | g/a/g | ground-to-air and air-to-ground | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
HEL | hel | helicopter | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
HGT | hgt | height or height above | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
IDENT | ident | identification | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
INCORP | incorp | incorporated | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
INFO | info | information | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
INOP | inop | inoperative | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
INSTR | instr | instrument | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
INTL | intl | international | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
LAT | lat | latitude | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
LDG | ldg | landing | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
LONG | long | longitude | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
MAINT | maint | maintenance | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
MAX | max | maximum | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
MNM | mnm | minimum | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
MOV | mov | move , moving, movement | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
MPS | mps | metres per second | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
MSG | msg | message | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
NAV | nav | navigation | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
NAVAID | navaid | navigation aid | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
NONSTD | nonstd | non-standard | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
NOSIG | nosig | no significant change | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
NR | nr | number | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
NTL | ntl | national | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
O/R | o/r | on request | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
OBS | obs | observe, observed, observation | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
OBST | obst | obstacle | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
OPS | ops | operations | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
PAX | pax | passenger(s) | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
PERM | perm | permanent | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
PROB | prob | probability | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
PROC | proc | procedure | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
PROP | prop | propeller | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
PWR | pwr | power | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
REF | ref | reference to, refer to | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
REG | reg | registration | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
REP | rep | report, reporting, reporting point | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
REQ | req | request, requested | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
RMK | rmk | remark | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
RTE | rte | route | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
SIG | sig | significant | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
STN | stn | station | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
STS | sts | status | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
SUBJ | subj | subject to | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
TEL | tel | telephone | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
TEMPO | tempo | temporary, temporarily | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
TFC | tfc | traffic | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
TGL | tgl | touch-and-go landing | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
TKOF | tkof | take-off | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
TLOF | tlof | touchdown and lift-off area | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
TURB | turb | turbulence | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
UFN | ufn | until further notice | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
VOL | vol | volume (followed by I, II...) | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
VRB | vrb | variable | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
WDI | wdi | wind direction indicator | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
WEF | wef | with efffect from | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
WIE | wie | with immediate effect | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
WILCO | wilco | will comply | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
WIP | wip | work in progress | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
WRNG | wrng | warning | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
WWW | www | worldwide web | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
YR | yr | your | 1st Case - abbreviations and acronyms kept, but spelled in lower case | ||||||
ABN | ABN | Aerodrome Beacon | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ACARS | ACARS | Aircraft communication addressing and reporting system | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ACAS | ACAS | Airborne collision avoidance system | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ACC | ACC | Area Control Center | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ACL | ACL | Altimeter check location | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ACN | ACN | Aircraft classification number | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AD | AD | Aerodrome | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ADF | ADF | Automatic Direction-Finding Equipment | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ADIZ | ADIZ | Air Defence Identification Code | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ADS-B | ADS-B | Automatic Dependent Surveillance - Broadcast | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ADS-C | ADS-C | Automatic Dependent Surveillance - Contract | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ADSU | ADSU | Automatic Dependent Surveillance Unit | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AFIL | AFIL | Flight Plan Filed in the Air | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AFIS | AFIS | Aerodrome Flight Information Service | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AFTN | AFTN | Aeronautical Fixed Telecommunication Network | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AGA | AGA | Aerodromes, Air Routes and Ground Aids | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AGL | AGL | Above Ground Level | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AIC | AIC | Aeronautical Information Circular | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AIP | AIP | Aeronautical Information Publication | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AIRAC | AIRAC | Aeronautical Information Regulation and Control | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AIRMET | AIRMET | Information concerning en-route weather phenomena which may affect the safety of low-level aircraft operations | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AIS | AIS | Aeronautical Information Services | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ALERFA | ALERFA | Alert Phase | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ALT | ALT | Altitude | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
| AMDT | AMDT | Amendment (AIP Amendment) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AMSL | AMSL | Above Mean Sea Level | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ANC | ANC | Aeronautical Chart - 1:500.000 (followed by name/title) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ANCS | ANCS | Aeronautical Navigation Chart - Small Scale (followed by name/title and scale) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AO | AO | Aircraft operator | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AOC | AOC | Aerodrome obstacle chart (followed by name/title) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
APAPI | APAPI | (to be pronounced "AY-PAPI")Abbreviated Precision Approach Path Indicator | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
APDC | APDC | Aircraft parking/docking chart (followed by name/title) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
APP | APP | Approach Control Office OR Approach Control OR Approach Control Service | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
APR | APR | April | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
APU | APU | Auxiliary power unit | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
APV | APV | Approach Procedure with Vertical guidance | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ARO | ARO | Air traffic services reporting office | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ARP | ARP | Aerodrome Reference Point | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ASDA | ASDA | Accelerate-Stop Distance Available | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ASHTAM | ASHTAM | ASHTAM | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ATA | ATA | Actual Time of Arrival | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ATC | ATC | Air Traffic Control (in general) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ATD | ATD | Actual Time of Departure | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ATFM | ATFM | Air Traffic Flow Management | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ATIS | ATIS | Automatic Terminal Information Service | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ATM | ATM | Air Traffic Management | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ATN | ATN | Aeronautical Telecommunication Network | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ATS | ATS | Air Traffic Services | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AT-VASIS | AT-VASIS | AT Visual Approach Slope Indicator System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ATZ | ATZ | Aerodrome Traffic Zone | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AUG | AUG | August | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AWOS | AWOS | Automated Weather Observation System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
AWY | AWY | Airway | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
BARO-VNAV | BARO-VNAV | Barometric vertical navigation | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
BRG | BRG | Bearing | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
C | C | Centre (preceded by runway designation number to identify a parallel RWY) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
C | C | Degrees Celsius (Centigrade) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CAA | CAA | Civil Aviation Authority or Civil Aviation Administration | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CAT | CAT | Category | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CAVOK | CAVOK | Visibility, cloud and present weather better than prescribed values or conditions | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CDR | CDR | Conditional route | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CH | CH | Channel | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CIDIN | CIDIN | Common ICAO Data Interchange Network | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CNS | CNS | Communications, Navigation and Surveillance | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
COM | COM | Communications | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CPDLC | CPDLC | Controller-Pilot Data Link Communications | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CS | CS | Call sign | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CTA | CTA | Control Area | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CTR | CTR | Control Zone | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
CWY | CWY | Clearway | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
D.... | D.... | Danger area (followed by Identification) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DA | DA | Decision Altitude | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
D-ATIS | D-ATIS | Data Link Automatic Terminal Information Service | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DCT | DCT | Direct | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DEC | DEC | December | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DEG | DEG | Degrees | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DEP | DEP | Departure (message type designator) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DETRESFA | DETRESFA | Distress Phase | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DF | DF | Direction Finding | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DH | DH | Decision Height | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DLA | DLA | Delay (message type designator) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DME | DME | Distance Measuring Equipment | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
D-VOLMET | D-VOLMET | Data Link VOLMET | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
DVOR | DVOR | Doppler VOR | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
E | E | Eastern Longitude | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
EGNOS | EGNOS | European Geostationary Navigation Overlay Service | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
EHF | EHF | Extremely High Frequency (30000 to 300000 MHz) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ELBA | ELBA | Emergency Location Beacon - Aircraft | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ELT | ELT | Emergency Locator Transmitter | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
EMERG | EMERG | Emergency | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ENR | ENR | En route | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ENRC | ENRC | Enroute chart (followed by name/title) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
EOBT | EOBT | Estimated Off-Block Time | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
EST | EST | Estimate OR Estimated OR Estimation (message type designator) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ETA | ETA | Estimated Time of Arrival OR Estimating Arrival | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ETD | ETD | Estimated Time of Departure OR Estimating Departure | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ETO | ETO | Estimated Time Over Significant Point | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FA | FA | Course from a fix to an altitude | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FAF | FAF | Final Approach Fix | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FAL | FAL | Facilitation of International Air Transport | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FAP | FAP | Final Approach Point | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FAS | FAS | Final Approach Segment | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FATO | FATO | Final Approach and Take-off Area | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FEB | FEB | February | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FIC | FIC | Flight Information Centre | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FIR | FIR | Flight Information Region | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FIS | FIS | Flight Information Service | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FL | FL | Flight Level | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FLG | FLG | Flashing | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FPL | FPL | Flight Plan | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
FRI | FRI | Friday | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GA | GA | General Aviation | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GAGAN | GAGAN | GPS & Geostationary Earth Orbit Augmented Navigation | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GBAS | GBAS | Ground Based Augmentation System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GEN | GEN | General | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GEO | GEO | Geographic OR True | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GLONAS | GLONAS | Global Orbiting Navigation Satellite System (to be pronounced "GLO-NAS") | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GND | GND | Ground | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GNSS | GNSS | Global Navigation Satellite System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GOV | GOV | Government | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GP | GP | Glide Path | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GPS | GPS | Global Positioning System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
GS | GS | Ground Speed | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
H24 | H24 | Continuous Day and Night Service | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HAPI | HAPI | Helicopter Approach Path Indicator | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HDF | HDF | High Frequency Direction-Finding Station | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HDG | HDG | Heading | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HF | HF | High Frequency [3000 to 30000 kHz] | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HJ | HJ | Sunrise to sunset | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HN | HN | Sunset to Sunrise | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HO | HO | Service available to meet operational requirements | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HOL | HOL | Holiday | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HOSP | HOSP | Hospital Aircraft | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HS | HS | Service Available During Hours of Scheduled Operations | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HUM | HUM | Humanitarian | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HVDF | HVDF | High and Very High Frequency Direction Finding Stations (At the Same Location) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
HX | HX | No Specific Working Hours | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
IAC | IAC | Instrument Approach Chart (followed by name/title) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
IAF | IAF | Initial Approach Fix | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
IAP | IAP | Instrument Approach Procedure | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
IAS | IAS | Indicated Air Speed | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ICAO | ICAO | International Civil Aviation Organization | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ID | ID | Identifier OR Identify | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
IF | IF | Intermediate Approach Fix | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
IFR | IFR | Instrument Flight Rules | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ILS | ILS | Instrument Landing System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
IM | IM | Inner marker | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
IMC | IMC | Instrument Meteorological Conditions | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
INCERFA | INCERFA | Uncertainty Phase | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
INS | INS | Inertial Navigation System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
IRS | IRS | Inertial reference system | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
ISA | ISA | International Standard Atmosphere | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
JAN | JAN | January | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
JUL | JUL | July | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
JUN | JUN | June | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
KIAS | KIAS | Knots indicated airspeed | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
L | L | Left (preceded by runway designation number to identify a parallel runway) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
L | L | Locator (See LM, LO) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LDA | LDA | Landing Distance Available | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LDAH | LDAH | Landing Distance Available, Helicopter
| 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LDI | LDI | Landing Direction Indicator | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LF | LF | Low Frequency (30 to 300 kHz) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LIH | LIH | Light Intensity High | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LIL | LIL | Light Intensity Low | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LIM | LIM | Light Intensity Medium | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LM | LM | Locator, Middle | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LNAV | LNAV | Lateral Navigation (to be pronounced "EL-NAV") | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LO | LO | Locator, Outer | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LOC | LOC | Localizer | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LORAN | LORAN | LORAN (Long Range Air Navigation System) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LPV | LPV | Localizer Performance with Vertical Guidance | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
LVP | LVP | Low Visibility Procedures | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
M | M | Mach Number (Followed by figures) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MAG | MAG | Magnetic | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MAP | MAP | Aeronautical maps and charts | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MAPT | MAPT | Missed Approach Point | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MAR | MAR | March | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MATZ | MATZ | Military Aerodrome Traffic Zone | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MAY | MAY | May | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MCTR | MCTR | Military Control Zone | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MDA | MDA | Minimum Descent Altitude | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MDH | MDH | Minimum Descent Height | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MEDEVAC | MEDEVAC | Medical Evacuation Flight | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MEHT | MEHT | Minimum Eye Height over Threshold (For VASIS and PAPI) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MET | MET | Meteorological OR Meteorology | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
METAR | METAR | Aerodrome routine meteorological report | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MF | MF | Medium Frequency (300 to 3000 kHz) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MIL | MIL | Military | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MKR | MKR | Marker radio beacon | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MLS | MLS | Microwave Landing System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MM | MM | Middle Marker | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MOA | MOA | Military Operating Area | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MOC | MOC | Minimum Obstacle Clearance (required) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MON | MON | Monday | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MSL | MSL | Mean Sea Level | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MSSR | MSSR | Monopulse Secondary Surveillance Radar | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
MWO | MWO | Meteorological Watch Office | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NAT | NAT | North Atlantic | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NDB | NDB | Non-Directional Radio Beacon | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NIL | NIL | None OR I Have nothing to send to you | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NOF | NOF | International NOTAM Office | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NOTAM | NOTAM | Notice To Airmen | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NOTAMC | NOTAMC | Cancelling NOTAM | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NOTAMN | NOTAMN | New NOTAM | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NOTAMR | NOTAMR | Replacing NOTAM | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NOV | NOV | November | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
NPA | NPA | Non-precision approach | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
OAC | OAC | Oceanic Area Control Centre | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
OCA | OCA | Obstacle Clearance Altitude | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
OCH | OCH | Obstacle Clearance Height | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
OCT | OCT | October | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
OLDI | OLDI | On-Line Data Interchange | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
OM | OM | Outer Marker | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
OPMET | OPMET | Operational Meteorological (information) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
P... | P... | Prohibited area (followed by identification) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
PANS | PANS | Procedures for Air Navigation Services | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
PAPI | PAPI | Precision Approach Path Indicator | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
PAR | PAR | Precision Approach Radar | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
PATC | PATC | Precision Approach Terrain Chart (followed by name/title) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
PBN | PBN | Performance-based navigation | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
PCN | PCN | Pavement Classification Number | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
PIB | PIB | Pre-flight Information Bulletin | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
PPR | PPR | Prior Permission Required | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
PSR | PSR | Primary Surveillance Radar | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
QDM | QDM | Magnetic Heading (zero wind) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
QDR | QDR | Magnetic Bearing | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
QFE | QFE | Atmospheric pressure at aerodrome elevation (OR at runway threshold) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
QNH | QNH | Altimeter sub-scale setting to obtain elevation when on the ground | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
QTE | QTE | True bearing | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
R... | R... | Restricted area (followed by identification) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
R | R | Right (preceded by runway designation number to identify a parallel runway) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
R-NNN | R-nnn | Radial from VOR (followed by three figures) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RAC | RAC | Rules of the Air and Air Traffic Services | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RAIM | RAIM | Receiver Autonomous Integrity Monitoring | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RCC | RCC | Rescue Co-ordination Centre | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RDH | RDH | Reference Datum Height | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RESA | RESA | Runway End Safety Area | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RNAV | RNAV | Area Navigation (to be pronounced "AR-NAV") | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RNP | RNP | Required Navigation Performance | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RPL | RPL | Repetitive flight plan | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RQP | RQP | Request flight plan (message type designator) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RQS | RQS | Request supplementary flight plan (message type designator) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RSR | RSR | En-Route Surveillance Radar | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RVR | RVR | Runway Visual Range | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RVSM | RVSM | Reduced Vertical Separation Minimum | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
RWY | RWY | Runway | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SAR | SAR | Search and Rescue | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SARPS | SARPS | Standards and Recommended Practices ICAO | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SAT | SAT | Saturday | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SATCOM | SATCOM | Satellite Communication | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SBAS | SBAS | Satellite Based Augmentation System (to be pronounced "ESS-BAS") | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SELCAL | SELCAL | Selective calling system | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SEP | SEP | September | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SFC | SFC | Surface | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SHF | SHF | Super High Frequency (3000 to 30000 MHz) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SI | SI | International system of units | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SID | SID | Standard Instrument Departure | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SIGMET | SIGMET | Information concerning en-route weather phenomena which may affect the safety of aircraft operations | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SNOWTAM | SNOWTAM | SNOWTAM | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SR | SR | Sunrise | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SRA | SRA | Surveillance Radar Approach | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SRE | SRE | Surveillance Radar Element of precision approach radar system | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SS | SS | Sunset | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SSR | SSR | Secondary Surveillance Radar | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
STAR | STAR | Standard instrument arrival | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
STD | STD | Standard | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SUN | SUN | Sunday | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SUP | SUP | Supplement (AIP Supplement) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SUPPS | SUPPS | Regional supplementary procedures | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
SWY | SWY | Stop way | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TA | TA | Transition Altitude | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TA/H | TA/H | Turn at an altitude/height | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TACAN | TACAN | UHF Tactical Air Navigation Aid | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TAF | TAF | Aerodrome forecast | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TAR | TAR | Terminal Area Surveillance Radar | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TAS | TAS | True Airspeed | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TCASRA | TCASRA | Traffic alert and collision avoidance system resolution advisory | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TDZ | TDZ | Touchdown Zone | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TF | TF | Track to fix | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
THR | THR | Threshold | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
THU | THU | Thursday | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TMA | TMA | Terminal Control Area | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TODA | TODA | Take-off Distance Available | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TODAH | TODAH | Take-off Distance Available, Helicopter | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TORA | TORA | Take-off Run Available | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TP | TP | Turning Point | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TRL | TRL | Transition Level | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TUE | TUE | Tuesday | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
T-VASIS | T-VASIS | T Visual Approach Slope Indicator System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TVOR | TVOR | Terminal VOR | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TWR | TWR | Aerodrome control tower OR aerodrome control | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
TWY | TWY | Taxiway | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
UAC | UAC | Upper Area Control Centre | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
UDF | UDF | Ultra High Frequency Direction Finding Station | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
UHF | UHF | Ultra High Frequency 300 to 3000 MHz | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
UIR | UIR | Upper Flight Information Region | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
UTA | UTA | Upper Control Area | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
UTC | UTC | Coordinated Universal Time | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VA | VA | Volcanic Ash | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VAAC | VAAC | Volcanic Ash Advisory Centre | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VAC | VAC | Visual Approach Chart | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VAR | VAR | Magnetic Variation | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VASIS | VASIS | Visual Approach Slope Indicator System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VDF | VDF | Very High Frequency Direction Finding Station | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VFR | VFR | Visual Flight Rules | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VHF | VHF | Very High Frequency [30 to 300 MHz] | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VIP | VIP | Very Important Person | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VLF | VLF | Very Low Frequency [3 to 30 KHz] | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VMC | VMC | Visual Meteorological Conditions | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VNAV | VNAV | Vertical Navigation (to be pronounced "VEE-NAV") | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VOLMET | VOLMET | Meteorological information for aircraft in flight | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VOR | VOR | Very High Frequency Omnidirectional Radio Range | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VORTAC | VORTAC | VOR and TACAN combination | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
VTOL | VTOL | Vertical Take-Off and Landing | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
WAAS | WAAS | Wide Area Augmentation System | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
WAC | WAC | World Aeronautical Chart — ICAO 1:1 000 000 (followed by name/title) | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
WED | WED | Wednesday | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
WGS-84 | WGS-84 | World Geodetic System - 1984 | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
WPT | WPT | Way-point | 2nd Case - abbreviations and acronyms kept, spelled in upper case | ||||||
A | amber | amber | 3rd Case - abbreviations spelled out in sentence case | ||||||
ABM | abeam | abeam | 3rd Case - abbreviations spelled out in sentence case | ||||||
ABT | about | about | 3rd Case - abbreviations spelled out in sentence case | ||||||
ABV | …or above | …or above | 3rd Case - abbreviations spelled out in sentence case | ||||||
ACP | acceptance | acceptance | 3rd Case - abbreviations spelled out in sentence case | ||||||
ACPT | accept | accept | 3rd Case - abbreviations spelled out in sentence case | ||||||
ACT | active, activated, activity | active, activated, activity | 3rd Case - abbreviations spelled out in sentence case | ||||||
ADDN | additional, addition | additional, addition | 3rd Case - abbreviations spelled out in sentence case | ||||||
ADJ | adjacent | adjacent | 3rd Case - abbreviations spelled out in sentence case | ||||||
ADR | advisory route | advisory route | 3rd Case - abbreviations spelled out in sentence case | ||||||
ADS | the address | the address | 3rd Case - abbreviations spelled out in sentence case | ||||||
ADZ | advise | advise | 3rd Case - abbreviations spelled out in sentence case | ||||||
AFM | affirm, affirmative | affirm, affirmative | 3rd Case - abbreviations spelled out in sentence case | ||||||
AFT | after | after | 3rd Case - abbreviations spelled out in sentence case | ||||||
AGN | again | again | 3rd Case - abbreviations spelled out in sentence case | ||||||
ALR | alerting | alerting | 3rd Case - abbreviations spelled out in sentence case | ||||||
AMD | amend, amended | amend, amended | 3rd Case - abbreviations spelled out in sentence case | ||||||
ANS | answer | answer | 3rd Case - abbreviations spelled out in sentence case | ||||||
AP | airport | airport | 3rd Case - abbreviations spelled out in sentence case | ||||||
APN | apron | apron | 3rd Case - abbreviations spelled out in sentence case | ||||||
APV | approve, approved, approval | approve, approved, approval | 3rd Case - abbreviations spelled out in sentence case | ||||||
ARNG | arrange | arrange | 3rd Case - abbreviations spelled out in sentence case | ||||||
ARST | arresting | arresting | 3rd Case - abbreviations spelled out in sentence case | ||||||
ASC | ascend to, ascending to | ascend to, ascending to | 3rd Case - abbreviations spelled out in sentence case | ||||||
AUX | auxiliary | auxiliary | 3rd Case - abbreviations spelled out in sentence case | ||||||
AVBL | available | available | 3rd Case - abbreviations spelled out in sentence case | ||||||
AVG | average | average | 3rd Case - abbreviations spelled out in sentence case | ||||||
B | blue | blue | 3rd Case - abbreviations spelled out in sentence case | ||||||
BCST | broadcast | broadcast | 3rd Case - abbreviations spelled out in sentence case | ||||||
BECMG | becoming | becoming | 3rd Case - abbreviations spelled out in sentence case | ||||||
BFR | before | before | 3rd Case - abbreviations spelled out in sentence case | ||||||
BKN | broken | broken | 3rd Case - abbreviations spelled out in sentence case | ||||||
BLDG | building | building | 3rd Case - abbreviations spelled out in sentence case | ||||||
BLW | below | below | 3rd Case - abbreviations spelled out in sentence case | ||||||
BOMB | bombing | bombing | 3rd Case - abbreviations spelled out in sentence case | ||||||
BRF | short | short | 3rd Case - abbreviations spelled out in sentence case | ||||||
BRKG | breaking | breaking | 3rd Case - abbreviations spelled out in sentence case | ||||||
BTN | between | between | 3rd Case - abbreviations spelled out in sentence case | ||||||
CD | candela | candela | 3rd Case - abbreviations spelled out in sentence case | ||||||
CIV | civil | civil | 3rd Case - abbreviations spelled out in sentence case | ||||||
CFM | confirm | confirm | 3rd Case - abbreviations spelled out in sentence case | ||||||
CH# | channel | channel | 3rd Case - abbreviations spelled out in sentence case | ||||||
CK | check | check | 3rd Case - abbreviations spelled out in sentence case | ||||||
CL | centre line | centre line | 3rd Case - abbreviations spelled out in sentence case | ||||||
CLBR | calibration | calibration | 3rd Case - abbreviations spelled out in sentence case | ||||||
CLD | cloud | cloud | 3rd Case - abbreviations spelled out in sentence case | ||||||
CLG | calling | calling | 3rd Case - abbreviations spelled out in sentence case | ||||||
CLR | cleared, clear, clearance | cleared, clear, clearance | 3rd Case - abbreviations spelled out in sentence case | ||||||
CLSD | close, closed, closing | close, closed, closing | 3rd Case - abbreviations spelled out in sentence case | ||||||
CMB | climb, climbing to | climb, climbing to | 3rd Case - abbreviations spelled out in sentence case | ||||||
CMPL | completion, complete,completed | completion, complete,completed | 3rd Case - abbreviations spelled out in sentence case | ||||||
CNL | cancel, cancelled | cancel, cancelled | 3rd Case - abbreviations spelled out in sentence case | ||||||
CONC | concrete | concrete | 3rd Case - abbreviations spelled out in sentence case | ||||||
CONS | continuous | continuous | 3rd Case - abbreviations spelled out in sentence case | ||||||
CONST | construction, constructed | construction, constructed | 3rd Case - abbreviations spelled out in sentence case | ||||||
COV | cover | cover | 3rd Case - abbreviations spelled out in sentence case | ||||||
CRZ | cruise | cruise | 3rd Case - abbreviations spelled out in sentence case | ||||||
CTC | contact | contact | 3rd Case - abbreviations spelled out in sentence case | ||||||
CTL | control | control | 3rd Case - abbreviations spelled out in sentence case | ||||||
CTN | caution | caution | 3rd Case - abbreviations spelled out in sentence case | ||||||
CUST | customs | customs | 3rd Case - abbreviations spelled out in sentence case | ||||||
D | downward | downward | 3rd Case - abbreviations spelled out in sentence case | ||||||
DEP | departure, depart | departure, depart | 3rd Case - abbreviations spelled out in sentence case | ||||||
DEPO | deposition | deposition | 3rd Case - abbreviations spelled out in sentence case | ||||||
DES | descend, descending | descend, descending | 3rd Case - abbreviations spelled out in sentence case | ||||||
DEV | deviation, deviating | deviation, deviating | 3rd Case - abbreviations spelled out in sentence case | ||||||
DIF | diffuse | diffuse | 3rd Case - abbreviations spelled out in sentence case | ||||||
DIV | divert, diverting | divert, diverting | 3rd Case - abbreviations spelled out in sentence case | ||||||
DLA | delay, delayed | delay, delayed | 3rd Case - abbreviations spelled out in sentence case | ||||||
DLY | daily | daily | 3rd Case - abbreviations spelled out in sentence case | ||||||
DNG | danger, dangerous | danger, dangerous | 3rd Case - abbreviations spelled out in sentence case | ||||||
DOM | domestic | domestic | 3rd Case - abbreviations spelled out in sentence case | ||||||
DPT | depth | depth | 3rd Case - abbreviations spelled out in sentence case | ||||||
DRG | during | during | 3rd Case - abbreviations spelled out in sentence case | ||||||
DUR | duration | duration | 3rd Case - abbreviations spelled out in sentence case | ||||||
E | east | east | 3rd Case - abbreviations spelled out in sentence case | ||||||
EB | eastbound | eastbound | 3rd Case - abbreviations spelled out in sentence case | ||||||
EM | emission | emission | 3rd Case - abbreviations spelled out in sentence case | ||||||
EMBD | embedded | embedded | 3rd Case - abbreviations spelled out in sentence case | ||||||
ENG | engine | engine | 3rd Case - abbreviations spelled out in sentence case | ||||||
EV | every | every | 3rd Case - abbreviations spelled out in sentence case | ||||||
EXC | except | except | 3rd Case - abbreviations spelled out in sentence case | ||||||
EXER | exercises, exercising, exercise | exercises, exercising, exercise | 3rd Case - abbreviations spelled out in sentence case | ||||||
EXP | expect | expect | 3rd Case - abbreviations spelled out in sentence case | ||||||
F | fixed | fixed | 3rd Case - abbreviations spelled out in sentence case | ||||||
FLT | flight, flights | flight, flights | 3rd Case - abbreviations spelled out in sentence case | ||||||
FLUC | fluctuating, fluctuation, fluctuated | fluctuating, fluctuation, fluctuated | 3rd Case - abbreviations spelled out in sentence case | ||||||
FLW | follows, following | follows, following | 3rd Case - abbreviations spelled out in sentence case | ||||||
FRQ | frequent | frequent | 3rd Case - abbreviations spelled out in sentence case | ||||||
FST | first | first | 3rd Case - abbreviations spelled out in sentence case | ||||||
G | green | green | 3rd Case - abbreviations spelled out in sentence case | ||||||
GLD | glider | glider | 3rd Case - abbreviations spelled out in sentence case | ||||||
GRVL | gravel | gravel | 3rd Case - abbreviations spelled out in sentence case | ||||||
HLDG | holding | holding | 3rd Case - abbreviations spelled out in sentence case | ||||||
HLP | heliport | heliport | 3rd Case - abbreviations spelled out in sentence case | ||||||
HVY | heavy | heavy | 3rd Case - abbreviations spelled out in sentence case | ||||||
HYR | higher | higher | 3rd Case - abbreviations spelled out in sentence case | ||||||
IMG | immigration | immigration | 3rd Case - abbreviations spelled out in sentence case | ||||||
IMPR | improving, improve | improving, improve | 3rd Case - abbreviations spelled out in sentence case | ||||||
IMT | immediate, immediately | immediate, immediately | 3rd Case - abbreviations spelled out in sentence case | ||||||
INBD | inbound | inbound | 3rd Case - abbreviations spelled out in sentence case | ||||||
INSTL | installed | installed | 3rd Case - abbreviations spelled out in sentence case | ||||||
INT | intersection | intersection | 3rd Case - abbreviations spelled out in sentence case | ||||||
LCA | local, located, location, locally | local, located, location, locally | 3rd Case - abbreviations spelled out in sentence case | ||||||
LEN | length | length | 3rd Case - abbreviations spelled out in sentence case | ||||||
LNG | long | long | 3rd Case - abbreviations spelled out in sentence case | ||||||
LGT | light or lighting | light or lighting | 3rd Case - abbreviations spelled out in sentence case | ||||||
LGTD | lighted | lighted | 3rd Case - abbreviations spelled out in sentence case | ||||||
LTD | limited | limited | 3rd Case - abbreviations spelled out in sentence case | ||||||
LVE | leave, leaving | leave, leaving | 3rd Case - abbreviations spelled out in sentence case | ||||||
LVL | level | level | 3rd Case - abbreviations spelled out in sentence case | ||||||
LYR | layer, layered | layer, layered | 3rd Case - abbreviations spelled out in sentence case | ||||||
MBST | microburst | microburst | 3rd Case - abbreviations spelled out in sentence case | ||||||
MNT | monitor, monitoring, monitored | monitor, monitoring, monitored | 3rd Case - abbreviations spelled out in sentence case | ||||||
MNTN | maintain | maintain | 3rd Case - abbreviations spelled out in sentence case | ||||||
MS | minus | minus | 3rd Case - abbreviations spelled out in sentence case | ||||||
MT | mountain | mountain | 3rd Case - abbreviations spelled out in sentence case | ||||||
N | north | north | 3rd Case - abbreviations spelled out in sentence case | ||||||
NB | northbound | northbound | 3rd Case - abbreviations spelled out in sentence case | ||||||
NGT | night | night | 3rd Case - abbreviations spelled out in sentence case | ||||||
NML | normal | normal | 3rd Case - abbreviations spelled out in sentence case | ||||||
NXT | next | next | 3rd Case - abbreviations spelled out in sentence case | ||||||
OBSC | obscure, obscured, obscuring | obscure, obscured, obscuring | 3rd Case - abbreviations spelled out in sentence case | ||||||
OCC | occulting | occulting | 3rd Case - abbreviations spelled out in sentence case | ||||||
OCNL | occasional, occasionally | occasional, occasionally | 3rd Case - abbreviations spelled out in sentence case | ||||||
OHD | overhead | overhead | 3rd Case - abbreviations spelled out in sentence case | ||||||
OPN | open | open | 3rd Case - abbreviations spelled out in sentence case | ||||||
OPR | operator, operate, operative | operator, operate, operative | 3rd Case - abbreviations spelled out in sentence case | ||||||
ORD | order | order | 3rd Case - abbreviations spelled out in sentence case | ||||||
OUBD | outbound | outbound | 3rd Case - abbreviations spelled out in sentence case | ||||||
OVC | overcast | overcast | 3rd Case - abbreviations spelled out in sentence case | ||||||
PARL | parallel | parallel | 3rd Case - abbreviations spelled out in sentence case | ||||||
PCD | proceed, proceeding | proceed, proceeding | 3rd Case - abbreviations spelled out in sentence case | ||||||
PCT | per cent | per cent | 3rd Case - abbreviations spelled out in sentence case | ||||||
PER | performance | performance | 3rd Case - abbreviations spelled out in sentence case | ||||||
POSS | possible | possible | 3rd Case - abbreviations spelled out in sentence case | ||||||
PRI | primary | primary | 3rd Case - abbreviations spelled out in sentence case | ||||||
PRKG | parking | parking | 3rd Case - abbreviations spelled out in sentence case | ||||||
PROV | provisional | provisional | 3rd Case - abbreviations spelled out in sentence case | ||||||
PS | plus | plus | 3rd Case - abbreviations spelled out in sentence case | ||||||
PSG | passing | passing | 3rd Case - abbreviations spelled out in sentence case | ||||||
PSN | position | position | 3rd Case - abbreviations spelled out in sentence case | ||||||
QUAD | quadrant | quadrant | 3rd Case - abbreviations spelled out in sentence case | ||||||
R | red | red | 3rd Case - abbreviations spelled out in sentence case | ||||||
RAG | ragged | ragged | 3rd Case - abbreviations spelled out in sentence case | ||||||
RCH | reach, reaching | reach, reaching | 3rd Case - abbreviations spelled out in sentence case | ||||||
RDO | radio | radio | 3rd Case - abbreviations spelled out in sentence case | ||||||
REC | receive, receiver | receive, receiver | 3rd Case - abbreviations spelled out in sentence case | ||||||
RDL | radial | radial | 3rd Case - abbreviations spelled out in sentence case | ||||||
RG | range | range | 3rd Case - abbreviations spelled out in sentence case | ||||||
RPLC | replace, replaced | replace, replaced | 3rd Case - abbreviations spelled out in sentence case | ||||||
RQMNTS | requirements | requirements | 3rd Case - abbreviations spelled out in sentence case | ||||||
RTF | radiotelephone | radiotelephone | 3rd Case - abbreviations spelled out in sentence case | ||||||
RTG | radiotelegraph | radiotelegraph | 3rd Case - abbreviations spelled out in sentence case | ||||||
RTN | return, returned, returning | return, returned, returning | 3rd Case - abbreviations spelled out in sentence case | ||||||
S | south | south | 3rd Case - abbreviations spelled out in sentence case | ||||||
SAN | sanitary | sanitary | 3rd Case - abbreviations spelled out in sentence case | ||||||
SB | southbound | southbound | 3rd Case - abbreviations spelled out in sentence case | ||||||
SECN | section | section | 3rd Case - abbreviations spelled out in sentence case | ||||||
SECT | sector | sector | 3rd Case - abbreviations spelled out in sentence case | ||||||
SER | service | service | 3rd Case - abbreviations spelled out in sentence case | ||||||
SGL | signal | signal | 3rd Case - abbreviations spelled out in sentence case | ||||||
SIMUL | simultaneous, simultaneously | simultaneous, simultaneously | 3rd Case - abbreviations spelled out in sentence case | ||||||
SLW | slow | slow | 3rd Case - abbreviations spelled out in sentence case | ||||||
SRY | secondary | secondary | 3rd Case - abbreviations spelled out in sentence case | ||||||
SS | sandstorm | sandstorm | 3rd Case - abbreviations spelled out in sentence case | ||||||
SVCBL | serviceable | serviceable | 3rd Case - abbreviations spelled out in sentence case | ||||||
T | temperature | temperature | 3rd Case - abbreviations spelled out in sentence case | ||||||
T | true | true | 3rd Case - abbreviations spelled out in sentence case | ||||||
TAIL | tail wind | tail wind | 3rd Case - abbreviations spelled out in sentence case | ||||||
TAX | taxiing, taxi | taxiing, taxi | 3rd Case - abbreviations spelled out in sentence case | ||||||
THRU | through | through | 3rd Case - abbreviations spelled out in sentence case | ||||||
TIL | until | until | 3rd Case - abbreviations spelled out in sentence case | ||||||
TOX | toxic | toxic | 3rd Case - abbreviations spelled out in sentence case | ||||||
TR | track | track | 3rd Case - abbreviations spelled out in sentence case | ||||||
TROP | tropopause | tropopause | 3rd Case - abbreviations spelled out in sentence case | ||||||
TT | teletypewriter | teletypewriter | 3rd Case - abbreviations spelled out in sentence case | ||||||
U/S | unserviceable | unserviceable | 3rd Case - abbreviations spelled out in sentence case | ||||||
UNA | unable | unable | 3rd Case - abbreviations spelled out in sentence case | ||||||
UNL | unlimited | unlimited | 3rd Case - abbreviations spelled out in sentence case | ||||||
UNREL | unreliable | unreliable | 3rd Case - abbreviations spelled out in sentence case | ||||||
VCY | vicinity | vicinity | 3rd Case - abbreviations spelled out in sentence case | ||||||
VER | vertical | vertical | 3rd Case - abbreviations spelled out in sentence case | ||||||
VIS | visibility | visibility | 3rd Case - abbreviations spelled out in sentence case | ||||||
W | west | west | 3rd Case - abbreviations spelled out in sentence case | ||||||
W | white | white | 3rd Case - abbreviations spelled out in sentence case | ||||||
WB | westbound | westbound | 3rd Case - abbreviations spelled out in sentence case | ||||||
WI | within | within | 3rd Case - abbreviations spelled out in sentence case | ||||||
WID | width | width | 3rd Case - abbreviations spelled out in sentence case | ||||||
WKN | weaken, weakening | weaken, weakening | 3rd Case - abbreviations spelled out in sentence case | ||||||
WO | without | without | 3rd Case - abbreviations spelled out in sentence case | ||||||
WS | windshear | windshear | 3rd Case - abbreviations spelled out in sentence case | ||||||
WSPD | windspeed | windspeed | 3rd Case - abbreviations spelled out in sentence case | ||||||
WT | weight | weight | 3rd Case - abbreviations spelled out in sentence case | ||||||
WTSPT | waterspout | waterspout | 3rd Case - abbreviations spelled out in sentence case | ||||||
WX | weather radar | weather radar | 3rd Case - abbreviations spelled out in sentence case | ||||||
X | cross | cross | 3rd Case - abbreviations spelled out in sentence case | ||||||
XBAR | crossbar | crossbar | 3rd Case - abbreviations spelled out in sentence case | ||||||
XNG | crossing | crossing | 3rd Case - abbreviations spelled out in sentence case | ||||||
XS | atmospheric | atmospheric | 3rd Case - abbreviations spelled out in sentence case | ||||||
Y | yellow | yellow | 3rd Case - abbreviations spelled out in sentence case | ||||||
AAD | assigned altitude deviation | assigned altitude deviation | 4th Case - acronyms spelled out in lower case | ||||||
AAR | air to air refuelling | air to air refuelling | 4th Case - acronyms spelled out in lower case | ||||||
ABI | advance boundary information | advance boundary information | 4th Case - acronyms spelled out in lower case | ||||||
ADO | aerodrome office | aerodrome office | 4th Case - acronyms spelled out in lower case | ||||||
ADVS | advisory service | advisory service | 4th Case - acronyms spelled out in lower case | ||||||
AES | aircraft earth station | aircraft earth station | 4th Case - acronyms spelled out in lower case | ||||||
AIDC | air traffic services interfacility data communications | air traffic services interfacility data communications | 4th Case - acronyms spelled out in lower case | ||||||
AIREP | air-report | air-report | 4th Case - acronyms spelled out in lower case | ||||||
ALA | alighting area | alighting area | 4th Case - acronyms spelled out in lower case | ||||||
ALRS | alerting service | alerting service | 4th Case - acronyms spelled out in lower case | ||||||
AMS | aeronautical mobile service | aeronautical mobile service | 4th Case - acronyms spelled out in lower case | ||||||
AMSS | aeronautical mobile satellite service | aeronautical mobile satellite service | 4th Case - acronyms spelled out in lower case | ||||||
APSG | after passing | after passing | 4th Case - acronyms spelled out in lower case | ||||||
ARP | air-report | air-report | 4th Case - acronyms spelled out in lower case | ||||||
ARQ | automatic error correction | automatic error correction | 4th Case - acronyms spelled out in lower case | ||||||
ARS | special air-report | special air-report | 4th Case - acronyms spelled out in lower case | ||||||
ASE | altimetry system error | altimetry system error | 4th Case - acronyms spelled out in lower case | ||||||
ATP | at… time or place | at… time or place | 4th Case - acronyms spelled out in lower case | ||||||
AUW | all up weight | all up weight | 4th Case - acronyms spelled out in lower case | ||||||
AWTA | advise at what time able | advise at what time able | 4th Case - acronyms spelled out in lower case | ||||||
BA | braking action (not each word in upper) | braking action (not each word in upper) | 4th Case - acronyms spelled out in lower case | ||||||
BASE | cloud base | cloud base | 4th Case - acronyms spelled out in lower case | ||||||
BLO | below clouds | below clouds | 4th Case - acronyms spelled out in lower case | ||||||
BS | commercial broadcasting station | commercial broadcasting station | 4th Case - acronyms spelled out in lower case | ||||||
BTL | between layers | between layers | 4th Case - acronyms spelled out in lower case | ||||||
CA | course to an altitude | course to an altitude | 4th Case - acronyms spelled out in lower case | ||||||
CAT | clear air turbulence | clear air turbulence | 4th Case - acronyms spelled out in lower case | ||||||
CF | change frequency to | change frequency to | 4th Case - acronyms spelled out in lower case | ||||||
CF | course to a fix | course to a fix | 4th Case - acronyms spelled out in lower case | ||||||
CGL | circling guidance lights | circling guidance lights | 4th Case - acronyms spelled out in lower case | ||||||
CLA | clear type of ice formation | clear type of ice formation | 4th Case - acronyms spelled out in lower case | ||||||
CLIMB-OUT | climb-out area | climb-out area | 4th Case - acronyms spelled out in lower case | ||||||
CLRD | RWY cleared | RWY cleared | 4th Case - acronyms spelled out in lower case | ||||||
COP | change-over point | change-over point | 4th Case - acronyms spelled out in lower case | ||||||
COT | at the coast | at the coast | 4th Case - acronyms spelled out in lower case | ||||||
CPL | current flight plan | current flight plan | 4th Case - acronyms spelled out in lower case | ||||||
CRM | collision risk model | collision risk model | 4th Case - acronyms spelled out in lower case | ||||||
CTAM | climb and maintain | climb and maintain | 4th Case - acronyms spelled out in lower case | ||||||
CVR | cockpit voice recorder | cockpit voice recorder | 4th Case - acronyms spelled out in lower case | ||||||
CW | continuous wave | continuous wave | 4th Case - acronyms spelled out in lower case | ||||||
DCD | double channel duplex | double channel duplex | 4th Case - acronyms spelled out in lower case | ||||||
DCP | datum crossing point | datum crossing point | 4th Case - acronyms spelled out in lower case | ||||||
DCS | double channel simplex | double channel simplex | 4th Case - acronyms spelled out in lower case | ||||||
DER | departure end of RWY | departure end of RWY | 4th Case - acronyms spelled out in lower case | ||||||
DFDR | digital flight data recorder | digital flight data recorder | 4th Case - acronyms spelled out in lower case | ||||||
DFTI | distance from touchdown indication | distance from touchdown indication | 4th Case - acronyms spelled out in lower case | ||||||
DLIC | data link initiation capability | data link initiation capability | 4th Case - acronyms spelled out in lower case | ||||||
DOF | date of flight | date of flight | 4th Case - acronyms spelled out in lower case | ||||||
DP | dew point temperature | dew point temperature | 4th Case - acronyms spelled out in lower case | ||||||
DR | dead reckoning | dead reckoning | 4th Case - acronyms spelled out in lower case | ||||||
DSB | double sideband | double sideband | 4th Case - acronyms spelled out in lower case | ||||||
DTAM | descend to and maintain | descend to and maintain | 4th Case - acronyms spelled out in lower case | ||||||
DTG | date-time-group | date-time-group | 4th Case - acronyms spelled out in lower case | ||||||
DTHR | displaced THR | displaced THR | 4th Case - acronyms spelled out in lower case | ||||||
DTRT | deteriorate, deteriorating | deteriorate, deteriorating | 4th Case - acronyms spelled out in lower case | ||||||
DTW | dual tandem wheels | dual tandem wheels | 4th Case - acronyms spelled out in lower case | ||||||
DUC | dense upper cloud | dense upper cloud | 4th Case - acronyms spelled out in lower case | ||||||
DUPE# | duplicated message | duplicated message | 4th Case - acronyms spelled out in lower case | ||||||
DW | dual wheels | dual wheels | 4th Case - acronyms spelled out in lower case | ||||||
EAT | expected approach time | expected approach time | 4th Case - acronyms spelled out in lower case | ||||||
EDA | elevation differential area | elevation differential area | 4th Case - acronyms spelled out in lower case | ||||||
EET | estimated elapsed time | estimated elapsed time | 4th Case - acronyms spelled out in lower case | ||||||
EFC | expected further clearance | expected further clearance | 4th Case - acronyms spelled out in lower case | ||||||
EFIS | electronic flight instrument systems | electronic flight instrument systems | 4th Case - acronyms spelled out in lower case | ||||||
ELR | extra long range | extra long range | 4th Case - acronyms spelled out in lower case | ||||||
END | stop-end | stop-end | 4th Case - acronyms spelled out in lower case | ||||||
ENE | east-north-east | east-north-east | 4th Case - acronyms spelled out in lower case | ||||||
ESE | east-south-east | east-south-east | 4th Case - acronyms spelled out in lower case | ||||||
EVS | enhanced vision system | enhanced vision system | 4th Case - acronyms spelled out in lower case | ||||||
FCT | friction coefficient | friction coefficient | 4th Case - acronyms spelled out in lower case | ||||||
FDPS | flight data processing system | flight data processing system | 4th Case - acronyms spelled out in lower case | ||||||
FISA | Use 'Automated FIS' instead. | Use 'Automated FIS' instead. | 4th Case - acronyms spelled out in lower case | ||||||
FLTCK | flight check | flight check | 4th Case - acronyms spelled out in lower case | ||||||
FLY | fly, flying | fly, flying | 4th Case - acronyms spelled out in lower case | ||||||
FM | from | from | 4th Case - acronyms spelled out in lower case | ||||||
FNA | final approach | final approach | 4th Case - acronyms spelled out in lower case | ||||||
FPAP | flight path alignment point | flight path alignment point | 4th Case - acronyms spelled out in lower case | ||||||
FPM | feet per minute | feet per minute | 4th Case - acronyms spelled out in lower case | ||||||
FPR | fligh plan route | fligh plan route | 4th Case - acronyms spelled out in lower case | ||||||
FR | fuel remaining | fuel remaining | 4th Case - acronyms spelled out in lower case | ||||||
FSL | full stop landing | full stop landing | 4th Case - acronyms spelled out in lower case | ||||||
FSS | flight service station | flight service station | 4th Case - acronyms spelled out in lower case | ||||||
FTE | flight technical error | flight technical error | 4th Case - acronyms spelled out in lower case | ||||||
FTT | flight technical tolerance | flight technical tolerance | 4th Case - acronyms spelled out in lower case | ||||||
GA | go ahead, resume sending | go ahead, resume sending | 4th Case - acronyms spelled out in lower case | ||||||
GAIN | airspeed or headwind gain | airspeed or headwind gain | 4th Case - acronyms spelled out in lower case | ||||||
GARP | GBAS azimuth reference point | GBAS azimuth reference point | 4th Case - acronyms spelled out in lower case | ||||||
GLS | GLS landing system | GLS landing system | 4th Case - acronyms spelled out in lower case | ||||||
GNDCK | ground check | ground check | 4th Case - acronyms spelled out in lower case | ||||||
GPA | glide path angle | glide path angle | 4th Case - acronyms spelled out in lower case | ||||||
GPIP | glide path intercept point | glide path intercept point | 4th Case - acronyms spelled out in lower case | ||||||
GRAS | ground based regional augmentation system | ground based regional augmentation system | 4th Case - acronyms spelled out in lower case | ||||||
GUND | geoid undulation | geoid undulation | 4th Case - acronyms spelled out in lower case | ||||||
HA | holding/racetrack to an altitude | holding/racetrack to an altitude | 4th Case - acronyms spelled out in lower case | ||||||
HBN | hazard beacon | hazard beacon | 4th Case - acronyms spelled out in lower case | ||||||
HF | holding/racetrack to a fix | holding/racetrack to a fix | 4th Case - acronyms spelled out in lower case | ||||||
HLS | heliport landing site | heliport landing site | 4th Case - acronyms spelled out in lower case | ||||||
HM | holding/racetrack to a manual termination | holding/racetrack to a manual termination | 4th Case - acronyms spelled out in lower case | ||||||
HUD | head-up display | head-up display | 4th Case - acronyms spelled out in lower case | ||||||
IAO | in and out of clouds | in and out of clouds | 4th Case - acronyms spelled out in lower case | ||||||
IAR | intersection of air routes | intersection of air routes | 4th Case - acronyms spelled out in lower case | ||||||
IBN | identification beacon | identification beacon | 4th Case - acronyms spelled out in lower case | ||||||
IFF | identification friend/foe | identification friend/foe | 4th Case - acronyms spelled out in lower case | ||||||
IGA | international general aviation | international general aviation | 4th Case - acronyms spelled out in lower case | ||||||
INA | intital approach | intital approach | 4th Case - acronyms spelled out in lower case | ||||||
INC | in cloud | in cloud | 4th Case - acronyms spelled out in lower case | ||||||
INP | if not possible | if not possible | 4th Case - acronyms spelled out in lower case | ||||||
INPR | in progress | in progress | 4th Case - acronyms spelled out in lower case | ||||||
ISB | independent sideband | independent sideband | 4th Case - acronyms spelled out in lower case | ||||||
ISOL | isolated | isolated | 4th Case - acronyms spelled out in lower case | ||||||
JTST | jetstream | jetstream | 4th Case - acronyms spelled out in lower case | ||||||
LAN | inland | inland | 4th Case - acronyms spelled out in lower case | ||||||
LMT | local mean time | local mean time | 4th Case - acronyms spelled out in lower case | ||||||
LOSS | airspeed or headwind loss | airspeed or headwind loss | 4th Case - acronyms spelled out in lower case | ||||||
LRG | long range | long range | 4th Case - acronyms spelled out in lower case | ||||||
LTP | landing thr point | landing thr point | 4th Case - acronyms spelled out in lower case | ||||||
MAHF | missed approach holding fix | missed approach holding fix | 4th Case - acronyms spelled out in lower case | ||||||
MAR | at sea | at sea | 4th Case - acronyms spelled out in lower case | ||||||
MATF | missed approach turning fix | missed approach turning fix | 4th Case - acronyms spelled out in lower case | ||||||
MCW | modulated continuous wave | modulated continuous wave | 4th Case - acronyms spelled out in lower case | ||||||
MDF | medium frequency direction finding station | medium frequency direction finding station | 4th Case - acronyms spelled out in lower case | ||||||
MHDF | medium and high frequency direction finding stations | medium and high frequency direction finding stations | 4th Case - acronyms spelled out in lower case | ||||||
MHVDF | medium, high and very high frequency direction finding stations | medium, high and very high frequency direction finding stations | 4th Case - acronyms spelled out in lower case | ||||||
MID | mid-point | mid-point | 4th Case - acronyms spelled out in lower case | ||||||
MON | above mountains | above mountains | 4th Case - acronyms spelled out in lower case | ||||||
MOPS | minimum operational performance standards | minimum operational performance standards | 4th Case - acronyms spelled out in lower case | ||||||
MRG | medim range | medim range | 4th Case - acronyms spelled out in lower case | ||||||
MSAW | minimum safety altitude warning | minimum safety altitude warning | 4th Case - acronyms spelled out in lower case | ||||||
MTOM | maximum take-off mass | maximum take-off mass | 4th Case - acronyms spelled out in lower case | ||||||
MTU | metric units | metric units | 4th Case - acronyms spelled out in lower case | ||||||
MTW | moutain waves | moutain waves | 4th Case - acronyms spelled out in lower case | ||||||
MVDF | medium and very high hrequency direction finding stations | medium and very high hrequency direction finding stations | 4th Case - acronyms spelled out in lower case | ||||||
N | no distinct tendency | no distinct tendency | 4th Case - acronyms spelled out in lower case | ||||||
NADP | noise abatement departure procedure | noise abatement departure procedure | 4th Case - acronyms spelled out in lower case | ||||||
NASC | national AIS system centre | national AIS system centre | 4th Case - acronyms spelled out in lower case | ||||||
NBFR | not before | not before | 4th Case - acronyms spelled out in lower case | ||||||
NC | no change | no change | 4th Case - acronyms spelled out in lower case | ||||||
NE | north-east | north-east | 4th Case - acronyms spelled out in lower case | ||||||
NEB | north-eastbound | north-eastbound | 4th Case - acronyms spelled out in lower case | ||||||
NEG | negative | negative | 4th Case - acronyms spelled out in lower case | ||||||
NN | no name, unnamed | no name, unnamed | 4th Case - acronyms spelled out in lower case | ||||||
NNE | north-north-east | north-north-east | 4th Case - acronyms spelled out in lower case | ||||||
NNW | north-north-west | north-north-west | 4th Case - acronyms spelled out in lower case | ||||||
NRH | no reply heard | no reply heard | 4th Case - acronyms spelled out in lower case | ||||||
NSE | navigation system error | navigation system error | 4th Case - acronyms spelled out in lower case | ||||||
NSW | nil significant weather | nil significant weather | 4th Case - acronyms spelled out in lower case | ||||||
NW | north-west | north-west | 4th Case - acronyms spelled out in lower case | ||||||
NWB | north-westbound | north-westbound | 4th Case - acronyms spelled out in lower case | ||||||
OPC | the control indicated is operational control | the control indicated is operational control | 4th Case - acronyms spelled out in lower case | ||||||
OSV | ocean station vessel | ocean station vessel | 4th Case - acronyms spelled out in lower case | ||||||
OTP | on top | on top | 4th Case - acronyms spelled out in lower case | ||||||
PA | precision approach | precision approach | 4th Case - acronyms spelled out in lower case | ||||||
PCL | pilot-controlled lighting | pilot-controlled lighting | 4th Case - acronyms spelled out in lower case | ||||||
PDC | pre-departure clearance | pre-departure clearance | 4th Case - acronyms spelled out in lower case | ||||||
PDG | procedure design gradient | procedure design gradient | 4th Case - acronyms spelled out in lower case | ||||||
PJE | parachute jumping exercise | parachute jumping exercise | 4th Case - acronyms spelled out in lower case | ||||||
PLA | practice low approach | practice low approach | 4th Case - acronyms spelled out in lower case | ||||||
PLVL | present level | present level | 4th Case - acronyms spelled out in lower case | ||||||
PN | prior notice required | prior notice required | 4th Case - acronyms spelled out in lower case | ||||||
PNR | point of no return | point of no return | 4th Case - acronyms spelled out in lower case | ||||||
POB | persons on board | persons on board | 4th Case - acronyms spelled out in lower case | ||||||
PPI | plan position indicator | plan position indicator | 4th Case - acronyms spelled out in lower case | ||||||
PPSN | present position | present position | 4th Case - acronyms spelled out in lower case | ||||||
PRP | point-in-space reference point | point-in-space reference point | 4th Case - acronyms spelled out in lower case | ||||||
PSP | pierced steel plank | pierced steel plank | 4th Case - acronyms spelled out in lower case | ||||||
PSYS | pressure system(s) | pressure system(s) | 4th Case - acronyms spelled out in lower case | ||||||
PTN | procedure turn | procedure turn | 4th Case - acronyms spelled out in lower case | ||||||
R | rate of turn | rate of turn | 4th Case - acronyms spelled out in lower case | ||||||
RA | resolution advisory | resolution advisory | 4th Case - acronyms spelled out in lower case | ||||||
RAG | RWY arresting gear | RWY arresting gear | 4th Case - acronyms spelled out in lower case | ||||||
RAI | RWY alignment indicator | RWY alignment indicator | 4th Case - acronyms spelled out in lower case | ||||||
RB | rescue boat | rescue boat | 4th Case - acronyms spelled out in lower case | ||||||
RCL | RWY centre line | RWY centre line | 4th Case - acronyms spelled out in lower case | ||||||
RCLL | RWY centre line light(s) | RWY centre line light(s) | 4th Case - acronyms spelled out in lower case | ||||||
RCLR | recleared | recleared | 4th Case - acronyms spelled out in lower case | ||||||
RCP | required communication performance | required communication performance | 4th Case - acronyms spelled out in lower case | ||||||
REDL | RWY edge light(s) | RWY edge light(s) | 4th Case - acronyms spelled out in lower case | ||||||
RENL | RWY end light(s) | RWY end light(s) | 4th Case - acronyms spelled out in lower case | ||||||
RHC | right-hand circuit | right-hand circuit | 4th Case - acronyms spelled out in lower case | ||||||
RIF | reclearance in flight | reclearance in flight | 4th Case - acronyms spelled out in lower case | ||||||
RL | report leaving | report leaving | 4th Case - acronyms spelled out in lower case | ||||||
RLA | relay to | relay to | 4th Case - acronyms spelled out in lower case | ||||||
RLCE | request level change en-route | request level change en-route | 4th Case - acronyms spelled out in lower case | ||||||
RLLS | RWY lead-in lighting system | RWY lead-in lighting system | 4th Case - acronyms spelled out in lower case | ||||||
RLNA | requested level not available | requested level not available | 4th Case - acronyms spelled out in lower case | ||||||
RNG | radio range | radio range | 4th Case - acronyms spelled out in lower case | ||||||
ROC | rate of climb | rate of climb | 4th Case - acronyms spelled out in lower case | ||||||
ROD | rate of descent | rate of descent | 4th Case - acronyms spelled out in lower case | ||||||
RON | receiving only | receiving only | 4th Case - acronyms spelled out in lower case | ||||||
RPDS | reference path data selector | reference path data selector | 4th Case - acronyms spelled out in lower case | ||||||
RPI | radar position Indicator | radar position Indicator | 4th Case - acronyms spelled out in lower case | ||||||
RR | report reaching | report reaching | 4th Case - acronyms spelled out in lower case | ||||||
RSC | rescue sub-centre | rescue sub-centre | 4th Case - acronyms spelled out in lower case | ||||||
RSCD | runway surface condition | runway surface condition | 4th Case - acronyms spelled out in lower case | ||||||
RSP | responder beacon | responder beacon | 4th Case - acronyms spelled out in lower case | ||||||
RSS | root sum square | root sum square | 4th Case - acronyms spelled out in lower case | ||||||
RTHL | RWY THR light(s) | RWY THR light(s) | 4th Case - acronyms spelled out in lower case | ||||||
RTODAH | rejected take-off distance available, helicopter | rejected take-off distance available, helicopter | 4th Case - acronyms spelled out in lower case | ||||||
RTS | return to service | return to service | 4th Case - acronyms spelled out in lower case | ||||||
RTT | radioteletypewriter | radioteletypewriter | 4th Case - acronyms spelled out in lower case | ||||||
RTZL | RWY touchdown zone light(s) | RWY touchdown zone light(s) | 4th Case - acronyms spelled out in lower case | ||||||
RUT | standard regional route transmitting frequencies | standard regional route transmitting frequencies | 4th Case - acronyms spelled out in lower case | ||||||
RV | rescue vessel | rescue vessel | 4th Case - acronyms spelled out in lower case | ||||||
SD | standard deviation | standard deviation | 4th Case - acronyms spelled out in lower case | ||||||
SDBY | stand by | stand by | 4th Case - acronyms spelled out in lower case | ||||||
SDF | step down fix | step down fix | 4th Case - acronyms spelled out in lower case | ||||||
SE | south-east | south-east | 4th Case - acronyms spelled out in lower case | ||||||
SEB | south-eastbound | south-eastbound | 4th Case - acronyms spelled out in lower case | ||||||
SIF | selective identification feature | selective identification feature | 4th Case - acronyms spelled out in lower case | ||||||
SIWL | single isolated wheel load | single isolated wheel load | 4th Case - acronyms spelled out in lower case | ||||||
SLP | speed limiting point | speed limiting point | 4th Case - acronyms spelled out in lower case | ||||||
SOC | start of climb | start of climb | 4th Case - acronyms spelled out in lower case | ||||||
SPI | special position indicator | special position indicator | 4th Case - acronyms spelled out in lower case | ||||||
SPL | supplementary flight plan | supplementary flight plan | 4th Case - acronyms spelled out in lower case | ||||||
SPOC | SAR point of contact | SAR point of contact | 4th Case - acronyms spelled out in lower case | ||||||
SPOT | spot wind | spot wind | 4th Case - acronyms spelled out in lower case | ||||||
SRG | short range | short range | 4th Case - acronyms spelled out in lower case | ||||||
SSB | single sideband | single sideband | 4th Case - acronyms spelled out in lower case | ||||||
SSE | south-south-east | south-south-east | 4th Case - acronyms spelled out in lower case | ||||||
SST | supersonic transport | supersonic transport | 4th Case - acronyms spelled out in lower case | ||||||
SSW | south-south-west | south-south-west | 4th Case - acronyms spelled out in lower case | ||||||
STA | straight-in approach | straight-in approach | 4th Case - acronyms spelled out in lower case | ||||||
STOL | short take-off and landing | short take-off and landing | 4th Case - acronyms spelled out in lower case | ||||||
STWL | stopway lights | stopway lights | 4th Case - acronyms spelled out in lower case | ||||||
SW | south-west | south-west | 4th Case - acronyms spelled out in lower case | ||||||
SWB | south-westbound | south-westbound | 4th Case - acronyms spelled out in lower case | ||||||
TA | traffic advisory | traffic advisory | 4th Case - acronyms spelled out in lower case | ||||||
TECR | technical reason | technical reason | 4th Case - acronyms spelled out in lower case | ||||||
TIP | until past… (place) | until past… (place) | 4th Case - acronyms spelled out in lower case | ||||||
TNA | turn altitude | turn altitude | 4th Case - acronyms spelled out in lower case | ||||||
TNH | turn height | turn height | 4th Case - acronyms spelled out in lower case | ||||||
TOC | top of climb | top of climb | 4th Case - acronyms spelled out in lower case | ||||||
TOP | cloud top | cloud top | 4th Case - acronyms spelled out in lower case | ||||||
TWYL | taxiway-link | taxiway-link | 4th Case - acronyms spelled out in lower case | ||||||
TYP | type of aircraft | type of aircraft | 4th Case - acronyms spelled out in lower case | ||||||
UA | unmanned acft | unmanned acft | 4th Case - acronyms spelled out in lower case | ||||||
UAB | until advised by | until advised by | 4th Case - acronyms spelled out in lower case | ||||||
UHDT | unable higher due traffic | unable higher due traffic | 4th Case - acronyms spelled out in lower case | ||||||
ULM | ultralight motorized acft | ultralight motorized acft | 4th Case - acronyms spelled out in lower case | ||||||
ULR | ultra long range | ultra long range | 4th Case - acronyms spelled out in lower case | ||||||
UNAP | unable to approve | unable to approve | 4th Case - acronyms spelled out in lower case | ||||||
VA | heading to an altitude | heading to an altitude | 4th Case - acronyms spelled out in lower case | ||||||
VAL | in valleys | in valleys | 4th Case - acronyms spelled out in lower case | ||||||
VAN | RWY control van | RWY control van | 4th Case - acronyms spelled out in lower case | ||||||
VAR | visual-aural radio range | visual-aural radio range | 4th Case - acronyms spelled out in lower case | ||||||
VI | heading to an intercept | heading to an intercept | 4th Case - acronyms spelled out in lower case | ||||||
VLR | very long range | very long range | 4th Case - acronyms spelled out in lower case | ||||||
VM | heading to a manual termination | heading to a manual termination | 4th Case - acronyms spelled out in lower case | ||||||
VOT | VOR airborne equipment test facility | VOR airborne equipment test facility | 4th Case - acronyms spelled out in lower case | ||||||
VPA | vertical path angle | vertical path angle | 4th Case - acronyms spelled out in lower case | ||||||
VPT | visual manoeuvre with prescribed track | visual manoeuvre with prescribed track | 4th Case - acronyms spelled out in lower case | ||||||
VSA | by visual reference to the ground | by visual reference to the ground | 4th Case - acronyms spelled out in lower case | ||||||
VSP | vertical speed | vertical speed | 4th Case - acronyms spelled out in lower case | ||||||
VTF | vector to final | vector to final | 4th Case - acronyms spelled out in lower case | ||||||
WAFC | world area forecast centre | world area forecast centre | 4th Case - acronyms spelled out in lower case | ||||||
WBAR | wing bar lights | wing bar lights | 4th Case - acronyms spelled out in lower case | ||||||
WDSPR | widespread | widespread | 4th Case - acronyms spelled out in lower case | ||||||
WNW | west-north-west | west-north-west | 4th Case - acronyms spelled out in lower case | ||||||
WSW | west-south-west | west-south-west | 4th Case - acronyms spelled out in lower case | ||||||
WX | weather | weather | 4th Case - acronyms spelled out in lower case | ||||||
AAIM | Aircraft Autonomous Integrity Monitoring | Aircraft Autonomous Integrity Monitoring | 5th Case - acronyms spelled out in Sentence Case+D1 | ||||||
AAL | Above Aerodrome Level | Above Aerodrome Level | 5th Case - acronyms spelled out in Sentence Case | ||||||
ADA | Advisory Area | Advisory Area | 5th Case - acronyms spelled out in Sentence Case | ||||||
ADC | Aerodrome Chart | Aerodrome Chart | 5th Case - acronyms spelled out in Sentence Case | ||||||
AFS | Aeronautical Fixed Service | Aeronautical Fixed Service | 5th Case - acronyms spelled out in Sentence Case | ||||||
AIM | Aeronautical Information Management | Aeronautical Information Management | 5th Case - acronyms spelled out in Sentence Case | ||||||
ALS | Approach Lighting System | Approach Lighting System | 5th Case - acronyms spelled out in Sentence Case | ||||||
AMA | Area Minimum ALT | Area Minimum ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
ARC | Area Chart | Area Chart | 5th Case - acronyms spelled out in Sentence Case | ||||||
ATCSMAC | ATC Surveillance Minimum ALT Chart | ATC Surveillance Minimum ALT Chart | 5th Case - acronyms spelled out in Sentence Case | ||||||
CDO | Continuous Descent Operations | Continuous Descent Operations | 5th Case - acronyms spelled out in Sentence Case | ||||||
CRP | Compulsory Reporting Point | Compulsory Reporting Point | 5th Case - acronyms spelled out in Sentence Case | ||||||
CRC | Cyclic Redundancy Check | Cyclic Redundancy Check | 5th Case - acronyms spelled out in Sentence Case | ||||||
D | Danger Area | Danger Area | 5th Case - acronyms spelled out in Sentence Case | ||||||
DCPC | Direct Controller-Pilot Communication | Direct Controller-Pilot Communication | 5th Case - acronyms spelled out in Sentence Case | ||||||
FMC | Flight Management Computer | Flight Management Computer | 5th Case - acronyms spelled out in Sentence Case | ||||||
FMS | Flight Management System | Flight Management System | 5th Case - acronyms spelled out in Sentence Case | ||||||
FMU | Flow Management Unit | Flow Management Unit | 5th Case - acronyms spelled out in Sentence Case | ||||||
GCA | Ground Controlled APP | Ground Controlled APP | 5th Case - acronyms spelled out in Sentence Case | ||||||
GES | Ground Earth Station | Ground Earth Station | 5th Case - acronyms spelled out in Sentence Case | ||||||
GMC | Ground Movement Chart | Ground Movement Chart | 5th Case - acronyms spelled out in Sentence Case | ||||||
GPU | Ground Power Unit | Ground Power Unit | 5th Case - acronyms spelled out in Sentence Case | ||||||
GPWS | Ground Proxmity Warning Area | Ground Proxmity Warning Area | 5th Case - acronyms spelled out in Sentence Case | ||||||
GRASS | Grass Landing Area | Grass Landing Area | 5th Case - acronyms spelled out in Sentence Case | ||||||
LTA | Lower Control Area | Lower Control Area | 5th Case - acronyms spelled out in Sentence Case | ||||||
MAA | Max Authorised ALT | Max Authorised ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
MCA | Minimum Crossing ALT | Minimum Crossing ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
MEA | Miminum ENR ALT | Miminum ENR ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
MHA | Minimum Holding ALT | Minimum Holding ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
MNPS | Minimum Navigation Performance Specifications | Minimum Navigation Performance Specifications | 5th Case - acronyms spelled out in Sentence Case | ||||||
MRA | Minimum Reception ALT | Minimum Reception ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
MSA | Minimum Sector ALT | Minimum Sector ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
MOCA | Minimum Obstacle Clearance ALT | Minimum Obstacle Clearance ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
MSAS | Multifunctional Transport Satellite Satellite-based Augmentation System | Multifunctional Transport Satellite Satellite-based Augmentation System | 5th Case - acronyms spelled out in Sentence Case | ||||||
NOZ | Normal Operating Zone | Normal Operating Zone | 5th Case - acronyms spelled out in Sentence Case | ||||||
NTZ | No Transgression Zone | No Transgression Zone | 5th Case - acronyms spelled out in Sentence Case | ||||||
OAS | Obstacle Assessment Surface | Obstacle Assessment Surface | 5th Case - acronyms spelled out in Sentence Case | ||||||
OCA | Oceanic Control Area | Oceanic Control Area | 5th Case - acronyms spelled out in Sentence Case | ||||||
OCS | Obstacle Clearance Surface | Obstacle Clearance Surface | 5th Case - acronyms spelled out in Sentence Case | ||||||
OFZ | Obstacle Free Zone | Obstacle Free Zone | 5th Case - acronyms spelled out in Sentence Case | ||||||
OIS | Obstacle Identification Surface | Obstacle Identification Surface | 5th Case - acronyms spelled out in Sentence Case | ||||||
OTS | Organised Track System | Organised Track System | 5th Case - acronyms spelled out in Sentence Case | ||||||
PALS | Precision Approach Lighting System | Precision Approach Lighting System | 5th Case - acronyms spelled out in Sentence Case | ||||||
P | Prohibited Area | Prohibited Area | 5th Case - acronyms spelled out in Sentence Case | ||||||
PTS | Polar Track Structure | Polar Track Structure | 5th Case - acronyms spelled out in Sentence Case | ||||||
R | Restricted Area | Restricted Area | 5th Case - acronyms spelled out in Sentence Case | ||||||
RASC | Regional AIS System Centre | Regional AIS System Centre | 5th Case - acronyms spelled out in Sentence Case | ||||||
RASS | Remote Altimeter Setting Source | Remote Altimeter Setting Source | 5th Case - acronyms spelled out in Sentence Case | ||||||
RCA | Reach Cruising ALT | Reach Cruising ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
RFFS | Rescue and Fire Fighting Services | Rescue and Fire Fighting Services | 5th Case - acronyms spelled out in Sentence Case | ||||||
RPS | Radar Position Symbol | Radar Position Symbol | 5th Case - acronyms spelled out in Sentence Case | ||||||
RVA | RWY Vectoring Area | RWY Vectoring Area | 5th Case - acronyms spelled out in Sentence Case | ||||||
SALS | Simple Approach Lighting Systems | Simple Approach Lighting Systems | 5th Case - acronyms spelled out in Sentence Case | ||||||
SMC | Surface Movement Control | Surface Movement Control | 5th Case - acronyms spelled out in Sentence Case | ||||||
SMR | Surface Movement Radar | Surface Movement Radar | 5th Case - acronyms spelled out in Sentence Case | ||||||
SRR | SAR Region | SAR Region | 5th Case - acronyms spelled out in Sentence Case | ||||||
TAA | Terminal Arrival ALT | Terminal Arrival ALT | 5th Case - acronyms spelled out in Sentence Case | ||||||
TCH | THR Crossing Height | THR Crossing Height | 5th Case - acronyms spelled out in Sentence Case | ||||||
TGS | Taxiing Guidance System | Taxiing Guidance System | 5th Case - acronyms spelled out in Sentence Case | ||||||
TIBA | Traffic Information Broadcast by Aircraft | Traffic Information Broadcast by Aircraft | 5th Case - acronyms spelled out in Sentence Case | ||||||
TRA | Temporary Reserved Airspace | Temporary Reserved Airspace | 5th Case - acronyms spelled out in Sentence Case | ||||||
UAR | Upper Air Route | Upper Air Route | 5th Case - acronyms spelled out in Sentence Case | ||||||
UIC | Upper Information Centre | Upper Information Centre | 5th Case - acronyms spelled out in Sentence Case | ||||||
YCZ | Yellow Caution Zone | Yellow Caution Zone | 5th Case - acronyms spelled out in Sentence Case | ||||||
C | C | degrees Celsius | 6th Case - units of measurement | ||||||
FT | ft | foot/feet | 6th Case - units of measurement | ||||||
HPA | hPa | hectopascal | 6th Case - units of measurement | ||||||
HZ | Hz | hertz | 6th Case - units of measurement | ||||||
HR | HR | hour | 6th Case - units of measurement | ||||||
KG | kg | kilogram | 6th Case - units of measurement | ||||||
KM | km | kilometer | 6th Case - units of measurement | ||||||
KMH | kmh | kilometer per hour | 6th Case - units of measurement | ||||||
KPA | kPa | kilopascal | 6th Case - units of measurement | ||||||
KW | kW | kilowatt | 6th Case - units of measurement | ||||||
KT | kt | knots | 6th Case - units of measurement | ||||||
LITRE | litre | litre | 6th Case - units of measurement | ||||||
MHZ | MHz | megahertz | 6th Case - units of measurement | ||||||
M | m | metre | 6th Case - units of measurement | ||||||
MIN | min | minute | 6th Case - units of measurement | ||||||
NM | NM | nautical mile | 6th Case - units of measurement | ||||||
SEC | sec | second | 6th Case - units of measurement |