FullDescription:Aerodrome operations
A-SMGCS capacity
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| Term | A-SMGCS capacity |
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Abbreviation
Definition
The maximum number of simultaneous movements of aircraft and vehicles that the system can safely support with an acceptable delay commensurate with the runway and taxiway capacity at a particular aerodrome.
Definition Source
ICAO (2004), DOC 9830 Advanced Surface Movement Guidance and Control Systems (A-SMGCS) Manual 2004, 1st ed., p. (ix)
Note
Actual Commence of Ground Handling Time
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| Term | Actual Commence of Ground Handling Time |
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Actual Ground Handling Time (AGHT) Actual End of Ground handling Time (AEGT) Actual In-Block Time (AIBT) |
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Abbreviation
ACGT
Definition
The time when ground handling on an aircraft starts, can be equal to the Actual In-Block Time (AIBT) (to be determined locally)
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual Commencement of De-icing Time
| Link | Semantic Value |
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| Term | Actual Commencement of De-icing Time |
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Abbreviation
ACZT
Definition
The time when de-icing operations on an aircraft starts.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual De-icing Time
| Link | Semantic Value |
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| Term | Actual De-icing Time |
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Abbreviation
ADIT
Definition
Metric AEZT – ACZT (Time difference between the Actual End of De-icing Time (AEZT) minus the Actual Commencement of De-icing Time (ACZT))
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Actual End of De-icing Time
| Link | Semantic Value |
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| Term | Actual End of De-icing Time |
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Abbreviation
AEZT
Definition
The time when de-icing operations on an aircraft end.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual End of Ground handling Time
| Link | Semantic Value |
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| Term | Actual End of Ground Handling Time |
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Actual Ground Handling Time (AGHT) Actual Commence of Ground Handling Time (ACGT) Actual Ready Time (ARDT) |
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Abbreviation
AEGT
Definition
The time when ground handling on an aircraft ends, can be equal to Actual Ready Time (ARDT) (TBD locally)
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual Ground Handling Time
| Link | Semantic Value |
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| Term | Actual Ground Handling Time |
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Abbreviation
AGHT
Definition
The total duration of the ground handling of the aircraft. Metric ACGT - AEGT
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual In-Block Time
| Link | Semantic Value |
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| Term | Actual In-Block Time |
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Abbreviation
AIBT
Definition
The actual date and time when the parking brakes have been engaged at the parking position.
Definition Source
EUROCONTROL, ATM Airport Performance (ATMAP) Framework, Report commissioned by the Performance Review Commission, dec. 2009
Note
Lexicon Release
Lexicon Release 2015.2
Actual Ready Time
| Link | Semantic Value |
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| Term | Actual Ready Time |
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Actual Ready Time for Movement |
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Abbreviation
ARDT
Definition
(the time)"When the aircraft is ready for start up/push back or taxi immediately after clearance delivery, meeting the requirements set by the TOBT definition"
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual Ready for De-icing Time
| Link | Semantic Value |
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| Term | Actual Ready for De-icing Time |
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Abbreviation
ARZT
Definition
The time when the aircraft is ready to be de-iced.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual Start Boarding Time
| Link | Semantic Value |
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| Term | Actual Start Boarding Time |
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Abbreviation
ASBT
Definition
(the) time (when) passengers are entering the bridge or bus to the aircraft
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual Start Up Approval Time
| Link | Semantic Value |
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| Term | Actual Start Up Approval Time |
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Abbreviation
ASAT
Definition
Time that an aircraft receives its start up approval.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual Start Up Request Time
| Link | Semantic Value |
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| Term | Actual Start Up Request Time |
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Abbreviation
ASRT
Definition
(the) time (when) the pilot requests start up clearance
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010
Note
Actual Take-Off Time
| Link | Semantic Value |
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| Term | Actual Take-Off Time |
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Calculated Take-Off Time (CTOT) Target Take-Off Time (TTOT) Estimated Take-Off Time (ETOT) |
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Abbreviation
ATOT
Definition
The time that an aircraft takes off from the runway (Equivalent to ATC ATD–Actual Time of Departure, ACARS = OFF)
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual Taxi-In Time
| Link | Semantic Value |
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| Term | Actual Taxi-In Time |
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Actual In-Block Time (AIBT) Actual landing time (ALDT) Actual Taxi-Out Time (AXOT) |
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Abbreviation
AXIT
Definition
Time difference between the Actual in-block time (AIBT) minus the Actual landing time (ALDT)
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual Taxi-Out Time
| Link | Semantic Value |
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| Term | Actual Taxi-Out Time |
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Actual Taxi-In Time (AXIT) Actual Off-Block Time (AOBT) Actual Take-Off Time (ATOT) |
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Abbreviation
AXOT
Definition
Time difference between the Actual take off time (ATOT) minus the Actual off-block time (AOBT).
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual Turn-round Time
| Link | Semantic Value |
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| Term | Actual Turn-round Time |
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Abbreviation
ATTT
Definition
Time difference between the Actual off-block time (AOBT) minus the Actual in-block time (AIBT)
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Actual landing time
| Link | Semantic Value |
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| Term | Actual landing time |
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Abbreviation
ALDT
Definition
The actual date and time when the aircraft has landed (touch down).
Definition Source
EUROCONTROL, ATM Airport Performance (ATMAP) Framework, Report commissioned by the Performance Review Commission, dec. 2009
Note
Lexicon Release
Lexicon Release 2015.2
Aircraft ground running
| Link | Semantic Value |
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| Term | Aircraft ground running |
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Abbreviation
Definition
the operation of some or all of the engines of an aircraft on the ground for the purpose of functionally checking the operation of either engines or aircraft systems on the ground.
This usually takes place prior to the Release to Service of an aircraft from maintenance and may be either prior to, during or after the rectification of a defect or scheduled work on either an engine being run or an aircraft system which requires engines to be operating in order to assess its function.
Definition Source
SKYBRARY (2011), reference tool for aviation safety knowledge [1]
Note
Airside Capacity Enhancement
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| Term | Airside Capacity Enhancement |
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EUROCONTROL |
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Abbreviation
ACE
Definition
project part of the EUROCONTROL Airport Operations Programme, the main aim of which "is to support airports to release latent airside capacity by implementing guidelines for runway, taxiway and apron operations."
Definition Source
EUROCONTROL, public website, web page on ACE [2]
Note
Arrival parking position
| Link | Semantic Value |
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| Term | arrival parking position |
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Abbreviation
Definition
The parking position assigned to an arriving flight.
Definition Source
EUROCONTROL (2004) EATM glossary
Note
Arrival runway occupancy time
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| Term | arrival runway occupancy time |
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runway occupancy time for arrivals |
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runway occupancy time (ROT) |
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Abbreviation
AROT
ROTA
Definition
the time interval between the aircraft crossing the threshold and its tail vacating the runway.
Definition Source
EUROCONTROL (2003) Enhancing Airside Capacity, the Complete Guide, Ed. 2.0
Note
Breakaway thrust
| Link | Semantic Value |
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| Term | breakaway thrust |
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Abbreviation
Definition
Engine power needed to initiate movement and reach taxiing speed.
Definition Source
Bill Gunston, Editor, Jane’s Information Group, "The Cambridge Aerospace Dictionary", 2004
Note
Cancel-DPI
| Link | Semantic Value |
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| Term | Cancel-DPI |
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Cancel - Departure Planning Information message |
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Abbreviation
C-DPI
Definition
"message inform(ing) the Central Flow Management Unit (CFMU) that previously sent DPI is no longer valid"
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, issue 3.1, July 2010
Note
Departure runway occupancy time
| Link | Semantic Value |
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| Term | departure runway occupancy time |
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runway occupancy time (ROT) |
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Line-up time (LUPT) Flight crew reaction time to ATC take-off clearance (FRTT) Wait time (WAIT) Take-off time (TOFT) |
Abbreviation
DROT
ROTD
Definition
the time interval between [the aircraft] crossing the stop bar at the holding point and the main gear lift-off from the runway.
Definition Source
EUROCONTROL (2003) Enhancing Airside Capacity, the Complete Guide, Ed. 2.0
Note
Estimated Commencement of De-icing Time
| Link | Semantic Value |
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| Term | Estimated Commencement of De-icing Time |
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Abbreviation
ECZT
Definition
The estimated time when de-icing operations on an aircraft are expected to start.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Estimated De-icing Time
| Link | Semantic Value |
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| Term | Estimated De-icing Time |
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Estimated End of De-icing Time |
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Abbreviation
EDIT
Definition
Metric Estimated End of De-icing Time(EEZT) – Estimated Commencement of De-icing Time (ECZT).
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Estimated End of De-icing Time
| Link | Semantic Value |
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| Term | Estimated End of De-icing time |
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Abbreviation
EEZT
Definition
The estimated time when de-icing operations on an aircraft are expected to end.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Estimated In-Block Time
| Link | Semantic Value |
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| Term | Estimated In-Block Time |
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Scheduled In-Block Time (SIBT) |
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Abbreviation
EIBT
Definition
The estimated time that an aircraft will arrive in-block.
Definition Source
SESAR Concept of Operations Step 2 Edition 2014 (Ed. 01.01.00)
Note
Lexicon Release
Lexicon Release 2015.1
Estimated Landing Time
| Link | Semantic Value |
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| Term | Estimated Landing Time |
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Abbreviation
ELDT
Definition
The estimated time that an aircraft will touchdown on the runway. (Equivalent to ATC ETA – Estimated Time of Arrival = landing).
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Estimated Ready for De-icing Time
| Link | Semantic Value |
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| Term | Estimated Ready for De-icing Time |
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Abbreviation
ERZT
Definition
The estimated time when the aircraft is expected to be ready for de-icing operations.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Estimated Take-Off Time
| Link | Semantic Value |
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| Term | Estimated Take-Off Time |
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Estimated Off-Block Time (EOBT) Estimated Taxi-Out Time (EXOT) Target Take-Off Time (TTOT) Calculated Take-Off Time (CTOT) Actual Take-Off Time (ATOT) |
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Abbreviation
ETOT
Definition
Forecast of time when aircraft will become airborne taking into account the EOBT plus EXOT
Definition Source
SESAR Concept of Operations Step 2 Edition 2014 (Ed. 01.01.00)
Note
Lexicon Release
Lexicon Release 2015.1
Estimated Taxi-In Time
| Link | Semantic Value |
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| Term | Estimated Taxi-In Time |
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Abbreviation
EXIT
Definition
The estimated taxi time between landing and in-block.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Estimated Taxi-Out Time
| Link | Semantic Value |
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| Term | Estimated Taxi-Out Time |
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Target Take-Off Time (TTOT) |
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Abbreviation
EXOT
Definition
The estimated time between off-block and take off. This estimate includes any delay buffer time at the holding point or remote de-icing prior to take off.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, issue 3.1, July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Estimated Turn-round Time
| Link | Semantic Value |
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| Term | Estimated Turn-round Time |
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Abbreviation
ETTT
Definition
The time estimated by the AO/GH (aircraft operator/ground handler) on the day of operation to turn-round a flight taking into account the operational constraints.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Flight crew reaction time to ATC take-off clearance
| Link | Semantic Value |
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| Term | Flight crew reaction time to ATC take-off clearance |
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Abbreviation
FRTT
Definition
the time interval between the ATC clearance for either line-up or take-off and commencement of taxiing to line-up.
Definition Source
EUROCONTROL (2003) Enhancing Airside Capacity, the Complete Guide, Ed. 2.0
Note
Ground handler
| Link | Semantic Value |
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| Term | ground handler |
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Abbreviation
GH
Definition
Company responsible for handling of aircraft during turn-round at the airport.
Definition Source
Note
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Ground handling
| Link | Semantic Value |
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| Term | ground handling |
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Abbreviation
Definition
Services necessary for an aircraft’s arrival at, and departure from, an airport, other than air traffic services.
Definition Source
ICAO (2010) Official definition, ANNEX 6/I Operation of Aircraft — International Commercial Air Transport — Aeroplanes 2010
Note
Holdover time
| Link | Semantic Value |
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| Term | holdover time |
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Abbreviation
HOT
Definition
The estimated time the anti-icing fluid (treatment) will prevent the formation of ice and frost and the accumulation of snow on the protected (treated) surfaces of an aeroplane.
Definition Source
ICAO (2004) Official definition, Annex 14, Aerodromes — Aerodrome Design and Operations
Note
In-Block
| Link | Semantic Value |
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| Term | In-Block |
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Abbreviation
Definition
the arrival of the aircraft at its first parking position with its parking brakes engaged
Definition Source
extract of the definitions for Actual In-Block Time and Scheduled In-Block Time (sources: EUROCONTROL ATMAP report (2009) and EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Line-up time
| Link | Semantic Value |
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| Term | Line-up time |
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Abbreviation
LUPT
Definition
the time interval between crossing the stop bar and the moment the aircraft is fully lined up.
Definition Source
EUROCONTROL (2003) Enhancing Airside Capacity, the Complete Guide, Ed. 2.0
Note
Minimum Turn-round Time
| Link | Semantic Value |
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| Term | Minimum Turn-round Time |
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Abbreviation
MTTT
Definition
The minimum turn-round time agreed with an AO/GH (aircraft operator/ground handler) for a specified flight or aircraft type.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Off-Block
| Link | Semantic Value |
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| Term | Off-Block |
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Abbreviation
Definition
the departure of the aircraft from its parking position.
Definition Source
extracted from the definition for Scheduled Off-Block Time (source: EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010)
Note
Lexicon Release
Lexicon Release 2015.2
Prop wash
| Link | Semantic Value |
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| Term | prop wash |
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Abbreviation
Definition
The force or wind generated behind a propellor, particularly on or before take-off when high/full power is set, but also when the aircraft is taxiing.
Definition Source
SKYBRARY (2010), reference tool for aviation safety knowledge [3]
Note
Scheduled In-Block Time
| Link | Semantic Value |
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| Term | Scheduled In-Block Time |
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Estimated In-Block Time (EIBT) |
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Abbreviation
SIBT
Definition
The time that an aircraft is scheduled to arrive at its first parking position.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Scheduled Off-Block Time
| Link | Semantic Value |
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| Term | Scheduled Off-Block Time |
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Abbreviation
SOBT
Definition
The time that an aircraft is scheduled to depart from its parking position.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1., July 2010
Note
Lexicon Release
Lexicon Release 2015.2
Scheduled Turn-round Time
| Link | Semantic Value |
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| Term | Scheduled Turn-round Time |
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Abbreviation
STTT
Definition
Metric SOBT - SIBT (Scheduled Off-Block Time - Scheduled In-Block Time)
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Take-off time
| Link | Semantic Value |
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| Term | Take-off time |
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Abbreviation
TOFT
Definition
the time interval between the moment the take-off roll has been initiated and the moment the main gear is off the runway.
Definition Source
EUROCONTROL (2003) Enhancing Airside Capacity, the Complete Guide, Ed. 2.0
Note
Target Landing Time
| Link | Semantic Value |
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| Term | Target Landing Time |
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Abbreviation
TLDT
Definition
Targeted Time from the Arrival management process at the threshold, taking runway sequence and constraints into account. It is not a constraint but a progressively refined planning time used to coordinate between arrival and departure management processes.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Each TLDT on one runway is separated from other TLDT or TTOT to represent vortex and/or SID separation between aircraft.
Lexicon Release
Lexicon Release 2015.2
Target Off-Block Time
| Link | Semantic Value |
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| Term | Target Off-Block Time |
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Abbreviation
TOBT
Definition
The time that an aircraft operator / handling agent estimates that an aircraft will be ready, all doors closed, boarding bridge removed, push back vehicle present, ready to start up / push back immediately upon reception of clearance from the TWR.
Definition Source
SESAR Concept of Operations Step 2 Edition 2014 (Ed. 01.01.00) SESAR Concept of Operations Step 2 Edition 2014 (Ed. 01.01.00)
Note
Lexicon Release
Lexicon Release 2015.1
Target Start Up Approval Time
| Link | Semantic Value |
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| Term | Target Start Up Approval Time |
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Target Take-Off Time (TTOT) Calculated Take-Off Time (CTOT) Target Off-Block Time (TOBT) |
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Abbreviation
TSAT
Definition
The time provided by ATC taking into account TOBT, CTOT and/or the traffic situation that an aircraft can expect to receive start up / push back approval.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, issue 3.1, July 2010
Note
The actual start up approval (ASAT) can be given in advance of TSAT.
Lexicon Release
Lexicon Release 2015.2
Target Take-Off Time
| Link | Semantic Value |
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| Term | Target Take-Off Time |
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Target Start Up Approval Time (TSAT) Estimated Taxi-Out Time (EXOT) Actual Take-Off Time (ATOT) Calculated Take-Off Time (CTOT) Estimated Take-Off Time (ETOT) |
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Abbreviation
TTOT
Definition
1. An ATM computed take off time. It is not a constraint but a progressively refined planning time that is used to:
- refine the departure airport sequencing and optimization of RWY throughput
- plan the take-off in order to achieve targets at the destination and during flight, whilst maintaining optimum flight efficiency.
2. The Target Take Off Time taking into account the TOBT/TSAT plus the EXOT. Each TTOT on one runway is separated from other TTOT or TLDT to represent vortex and / or SID separation between aircraft.
Definition Source
1. SESAR Concept of Operations Step 2 Edition 2014 (Ed. 01.01.00)
2. EUROCONTROL/IATA/ACI, Airport CDM Implementation Manual, V.4, March 2012
Note
Lexicon Release
Lexicon Release 2016.1
Target-DPI
| Link | Semantic Value |
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| Term | Target-DPI |
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Target - departure planning information message |
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Target Take-Off Time (TTOT) |
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Abbreviation
T-DPI
Definition
"DPI message (...) sent from the CDM-Airport to the CFMU (ETFMS) notifying the Target Take Off Time (TTOT)"
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, issue 3.1, July 2010
Note
T-DPI subtypes are:
T-DPI-p (Target DPI - Provisional)
T-DPI-c (Target DPI - Confirmed)
T-DPI-s (Target DPI - Sequenced)
Note Source
EUROCONTROL, CFMU (2010) CFMU website on "The Departure Planning Information (DPI) message" [4]
Turn-round
| Link | Semantic Value |
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| Term | turn-round |
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Abbreviation
Definition
The arrival, unloading, and preparation for the return journey of a ship, aircraft, goods vehicle, etc.; the time taken for this.
Definition Source
OED Oxford English Dictionary, online [5]
Note
In A-CDM, turn-round starts when the aircraft is in block and ends when it is off block (see Actual Turn-round Time).
Lexicon Release
Lexicon Release 2015.2
Variable Taxi Time
| Link | Semantic Value |
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| Term | Variable Taxi Time |
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Estimated Taxi-In Time (EXIT) Estimated Taxi-Out Time (EXOT) |
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Abbreviation
VTT
Definition
the estimated time that an aircraft spends taxiing between its parking stand and the runway or vice versa.
Variable Taxi Time is the common name for inbound (EXIT) and outbound (EXOT) taxi times, used for calculation of TTOT or TSAT.
Definition Source
EUROCONTROL, ACI, IATA (2010) Airport CDM Implementation Manual, Issue 3.1. July 2010
Note
Inbound taxi time (EXIT) includes runway occupancy and ground movement time, whereas outbound taxi time (EXOT) includes push back & start up time, ground movement, remote or apron de-icing, and runway holding times.
Lexicon Release
Lexicon Release 2015.2
Wait time
| Link | Semantic Value |
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| Term | wait time |
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Abbreviation
WAIT
Definition
the time interval measured between the completed line-up and the ATC clearance for take-off.
Definition Source
EUROCONTROL (2003) Enhancing Airside Capacity, the Complete Guide, Ed. 2.0
Note
