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A list of all pages that have property "Definition" with value "a grouping of required functions into modules and sub-modules". Since there have been only a few results, also nearby values are displayed.

Showing below up to 126 results starting with #1.

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List of results

  • Aerodrome Elevation  + (The vertical distance above Mean Sea Level (MSL) of the highest point of the landing area.)
  • Height Above Landing  + (The vertical distance between the designated helicopter landing area and the Decision Altitude (DA) for precision approaches, or the Minimum Descent Altitude (MDA) for non-precision approaches.)
  • Height Above Surface  + (The vertical distance between the highest terrain/surface within a 5200 feet radius of the Missed Approach Point (MAP) and the Minimum Descent Altitude (MDA).)
  • Height Above Aerodrome  + (The vertical distance between the published aerodrome elevation and the Minimum Descent Altitude (MDA).)
  • Height Above Touchdown  + (The vertical distance between the touchdown zone elevation and the Decision Altitude (DA) for precision approaches, or the Minimum Descent Altitude (MDA) for non-precision approaches.)
  • Distance Measuring Equipment Antenna Elevation  + (The vertical distance from Mean Sea Level (MSL) to the base of the Distance Measuring Equipment (DME) antenna.)
  • Altitude  + (The vertical distance of a level, a point or an object considered as a point, measured from mean sea level (MSL))
  • Height  + (The vertical distance of a level, a point, or an object considered as a point, measured from a specified datum.)
  • Elevation  + (The vertical distance of a point or a level, on or affixed to the surface of the Earth, measured from Mean Sea Level (MSL).)
  • Beamwidth  + (The width of the scanning beam main lobe measured at the minus 3-dB points and defined in angular units on the [[boresight]], in the horizontal plane for the azimuth function and in the vertical plane for the elevation function.)
  • ACC nominal saturated capacity  + (Theoretical maximum ACC capacity at the point where every sector is saturated.)
  • Acts of unlawful interference  + (These are acts or attempted acts such as t
    These are acts or attempted acts such as to jeopardize the safety of civil aviation, including but not limited to: • unlawful seizure of aircraft, • destruction of an aircraft in service, • hostage-taking on board aircraft or on aerodromes, • forcible intrusion on board an aircraft, at an airport or on the premises of an aeronautical facility, • introduction on board an aircraft or at an airport of a weapon or hazardous device or material intended for criminal purposes, • use of an aircraft in service for the purpose of causing death, serious bodily injury, or serious damage to property or the environment, • communication of false information such as to jeopardize the safety of an aircraft in flight or on the ground, of passengers, crew, ground personnel or the general public, at an airport or on the premises of a civil aviation facility.
    the premises of a civil aviation facility.)
  • Meteorological services  + (Those facilities and services that furnish aviation with meteorological forecasts, briefs and observations as well as SIGMET information, VOLMET broadcasting material and any other meteorological data provided by States for aeronautical use.)
  • Alternative means of compliance  + (Those means of compliance that propose an
    Those means of compliance that propose an alternative to an existing AMC ([[Acceptable means of compliance]]) or those that propose new means to establish compliance with Regulation (EC) No 216/2008 and its Implementing Rules for which no associated AMC have been adopted by the Agency.
    iated AMC have been adopted by the Agency.)
  • Time Value of Money  + (Time Value of Money means that the same (nominal) amount of money received at different points in time has different value.)
  • Actual Taxi-In Time  + (Time difference between the Actual in-block time (AIBT) minus the Actual landing time (ALDT))
  • Actual Turn-round Time  + (Time difference between the Actual off-block time (AOBT) minus the Actual in-block time (AIBT))
  • Actual Taxi-Out Time  + (Time difference between the Actual take off time (ATOT) minus the Actual off-block time (AOBT).)
  • Block hour  + (Time from the moment the aircraft door closes at departure of a revenue flight until the moment the aircraft door opens at the arrival gate following its landing.)
  • Actual Start Up Approval Time  + (Time that an aircraft receives its start up approval.)
  • Slot Tolerance Window  + (Time window around the [[CTOT]] in which a flight should be taking off. By default 5 minutes before and 10 minutes after CTOT. This value can be updated in [[ETFMS]].)
  • Departure Tolerance Window  + (Time window around the [[ETOT]] in which a flight should be taking off. By default 15 minutes before and 15 minutes after ETOT. This value can be updated in [[ETFMS]].)
  • Level off  + (To maneuver an aircraft into a flight attitude that is parallel to the surface of the earth after gaining or losing altitude.)
  • Trajectory Adjustment through Constraint of Time  + (Tool (formerly TC-SA) performing early conflict resolution through the allocation of CTO to appropriate aircraft over the conflict point.)
  • Average ATFM delay  + (Total minutes of departure delay/Total number of flights (where total minutes of departure delay is accumulated over all flights).)
  • Average ATFM delay per delayed flight  + (Total number of delayed flights/Total number of flights.)
  • Adjacent track  + (Track provided to an ARTAS Unit by one of its adjacent Units.)
  • Confirmed track  + (Track with a high [[Confidence]] (above a tracker dependent threshold).)
  • Correlated tracks  + (Tracks which have been correlated with a [[flight plan]] (sometimes this term applies only to tracks for which the Mode A code has been correlated with a call-sign in the code/call-sign list i.e. flight plan association).)
  • Air-ground communication  + (Two-way communication between aircraft and stations or locations on the surface of the earth.)
  • Distance Measuring Equipment  + (Ultra High Frequency (UHF) ground equipment that is used in conjunction with airborne equipment to determine distance between the airborne and ground equipment.)
  • Spurious plot  + (Unwanted radar plot not corresponding directly with an aircraft position (generally applied for SSR).)
  • Reflections  + (Unwanted signals (PSR or SSR) in the [[upl
    Unwanted signals (PSR or SSR) in the [[uplink]] and/or [[downlink]] paths resulting in erroneous replies entering the data processing system. Typical reflectors are ground obstructions such as aircraft hangars, buildings, towers and adjacent hills or mountains.
    s, towers and adjacent hills or mountains.)
  • Integrated Roadmap  + (Visualises Enablers (System, Procedural, Institutional and Human) grouped by OI Step. The Enablers are shown on a timeline with V3 End dates and IOC dates. For the OI Steps the shaded area shows the IOC/FOC dates.)
  • Benefit mechanism  + (Within a [[cost-benefit analysis]] (CBA), benefit mechanisms are a cause-effect description of the improvement proposed by the project. They show how benefits are delivered.)
  • Focus area  + (Within each KPA, a number of more specific "Focus Areas" are identified in which there are potential intentions to establish performance management. Focus Areas are typically needed where performance issues have been identified.)
  • Seamlessness  + (Within the ATM system [...] the property t
    Within the ATM system [...] the property that allows a transition across any discontinuity (perceived or otherwise), which from the perspective of the transiting agent does not require effort to facilitate the transition, thereby eliminating any impact imposed by the discontinuity.
    g any impact imposed by the discontinuity.)
  • Feeder air carrier  + ([An air carrier which] operates short-haul services connecting small and regional points to a [[hub airport]], generally using small to medium-capacity aircraft.)
  • Passenger air carrier  + ([An air carrier] primarily involved in the transportation of passengers by aircraft (although such aircraft may also carry freight).)
  • Special Activity Airspace  + ([U.S.] Any airspace with defined dimension
    [U.S.] Any airspace with defined dimensions within the National Airspace System wherein limitations may be imposed upon aircraft operations. This airspace may be restricted areas, prohibited areas, military operations areas, air ATC assigned airspace, and any other designated airspace areas.
    , and any other designated airspace areas.)
  • Level capping  + ([[Air Traffic Flow and Capacity Management
    [[Air Traffic Flow and Capacity Management]] ([[ATFCM]]) measure limiting the highest flight level that can be flight planned between two airports, or an airport and a waypoint or waypoints, or between two waypoints, in order to reduce traffic demand in the airspace above a pre-determined flight level.
    space above a pre-determined flight level.)
  • Calculated Off-Block Time  + ([[CTOT]] (Calculated Take-Off Time) minus taxi time. COBT is use within the AOWIR tool to define the time when, for a regulated flight, the functions ‘Apply’ and Apply/File’ are no longer available (45 minutes before COBT).)
  • Flight Activation Monitoring  + ([[ETFMS]] process which suspends flights if not taking off after 30 minutes after E/CTOT.)
  • Key field  + ([[FPL]] items used by [[IFPS]] for association purposes. These items are: ARCID, ADEP, ADES, DOF, EOBT, TTL_EET.)
  • Wide area multilateration  + ([[Multilateration system]]s that monitor aircraft in flight. (As distinct from surface surveillance))
  • Core Data Warehouse  + ([a data warehouse, whose function it is] t
    [a data warehouse, whose function it is] to facilitate data loading, integration and quality assurance. So, the function of a core data warehouse is not to make the data available to its users. Instead, for the users’ purposes, i.e. for performance data analysis and dissemination, separate [[data mart]]s should be built.
    , separate [[data mart]]s should be built.)
  • Milestone Approach Concept Element  + ([a description of] the progress of a flight from the initial planning to the take off by defining Milestones to enable close monitoring of significant events)
  • Manual message  + ([a message] transmitted by [[IFPS]] when an incoming message contains errors, indicating that it will be presented to an IFPS operator for manual processing.)
  • Difference from Long-Term Average metric  + ([a metric] designed to measure relative ch
    [a metric] designed to measure relative change in time-based performance (e.g. flight time) normalised by selected criteria (origin, destination, aircraft type, etc.) for which sufficient data are available. The analysis compares actual performance for each flight of a given city pair with the long term average (i.e. average between 2003 and 2009) for that city pair.
    between 2003 and 2009) for that city pair.)
  • Supporting metric  + ([a metric] used to calculate the values of performance indicators.)
  • Aerodrome controller  + ([a person]"normally responsible for operations on the runway and aircraft flying within the area of responsibility of the aerodrome control tower")
  • Performance modelling  + ([a technique used] to construct ATM perfor
    [a technique used] to construct ATM performance models which help to — qualitatively and/or quantitatively — understand the cause-effect relationships between performance variables, showing how individual performance objectives can be achieved and how they interact (enhance or interfere) with each other. This enables understanding of how performance levels can be achieved by operational improvements and what the trade-offs are.
    improvements and what the trade-offs are.)
  • Centralised SSR Code Assignment and Management System  + ([a tool that] centrally assigns [[SSR code
    [a tool that] centrally assigns [[SSR code]]s to all IFR/GAT flights that enter the CCAMS Area. CCAMS will provide the assigned SSR code to the ATS Units along the route of the flight plan. The first ATS Unit in the CCAMS Area will assign the CCAMS Code to the flight concerned.
    gn the CCAMS Code to the flight concerned.)
  • Commuter air carrier  + ([an air carrier which] operates feeder and
    [an air carrier which] operates feeder and/or regional services, more often of the point-to-point type, usually with aircraft seating no more than 30 passengers; this capacity limit, however, has been continually growing over the years and may now refer to aircraft with up to 50 seats
    now refer to aircraft with up to 50 seats)
  • Regional air carrier  + ([an air carrier which] provides short-haul scheduled passenger and freight services, operating mostly turboprop and/or small jet aircraft and connecting small and medium-sized communities with major cities and hubs.)
  • Cargo air carrier  + ([an air carrier] primarily involved in the transportation of freight and mail by aircraft.)
  • International air carrier  + ([an air carrier] that provides air transport services on routes involving more than one State and that may also operate [[domestic air service]]s.)
  • Wet-leased aircraft  + ([an aircraft used under a contractual leasing agreement,] including a crew)
  • Supersonic aircraft  + ([an aircraft] capable of flying at speeds exceeding the speed of sound.)
  • Reject message  + ([an operational reply message] sent to the
    [an operational reply message] sent to the originator of a message to indicate that the submitted message could not be processed successfully, either automatically or manually, and that the submitted message has not been accepted and processed by the IFPS.
    t been accepted and processed by the IFPS.)
  • Volume of air traffic  + ([for ATFCM purposes] The number of aircraft within a defined airspace or aircraft movements at an aerodrome, within a specified period of time.)
  • SWOT analysis  + ([in business management] the analysis of a system or organization with the aim of developing an inventory of present and future Strengths, Weaknesses, Opportunities and Threats that may require performance management attention.)
  • Aggregation hierarchy  + ([the definition of] how detailed (granular) performance data will be aggregated into summary data, and vice versa, how to break down the summary data into details.)
  • Classification scheme  + ([the definition of] how general object typ
    [the definition of] how general object types and event types can be more specifically characterized in terms of subtypes. For example: air vehicle < aircraft < aircraft category < aircraft class < aircraft type < aircraft model < aircraft series < airframe.
    model < aircraft series < airframe.)
  • Anti-spoofing  + ([within the GPS system]... the ability to
    [within the GPS system]... the ability to essentially "turn off" the P-code or invoke an encrypted code (Y-code) as a means of denying access to the P-code to all but authorized users. The rationale for doing this is to keep adversaries from sending out false signals with the GPS signature to create confusion and cause users to misposition themselves.
    and cause users to misposition themselves.)
  • Digital Flight Data Recorder  + (a recording device that utilizes a digital
    a recording device that utilizes a digital method to record and store data onto a storage medium and to retrieve that data from the medium. A DFDR may be the storage device in a recording system that includes a [[DFDAU]] or a [[FDAU]]. Or, it may be a stand-alone device using an internal data collection system to convert aircraft analog and discrete signals to digital form.
    alog and discrete signals to digital form.)
  • Directorate Network Management  + (a Directorate of EUROCONTROL that "includes the [[NM]] in a wider scope, which ranges from airspace design, strategic ATM planning and Network Operations to post-operations analysis and performance monitoring".)
  • North European ADS-B Network (NEAN) Update Programme Phase II  + (a European Commission funded programme aiming to “establish a European ADS-B network based on global standards and supporting certified applications and equipment in synergy with the European ATM concepts providing benefits to ATM stakeholders.)
  • Wide Area Augmentation System  + (a GPS-based navigation and landing system that provides precision guidance to aircraft at thousands of airports and airstrips where there is currently no precision landing capability.)
  • ATN island  + (a Routing Domain Confederation (RDC) compr
    a Routing Domain Confederation (RDC) comprising CAA-operated ATN RDs within a geographical region, and may include associated ATN service providers, or an RDC comprising Aeronautical Industry members which are users of communications services of a single Aeronautical Industry Service Provider, or more than one such provider providing services in combination with each other.
    g services in combination with each other.)
  • Slot  + (a [[Calculated Take-Off Time]] (CTOT) that the Aircraft Operator should comply with and a time window around the CTOT in which the aircraft has to take-off. This time window is used for sequencing departure flights.)
  • Upper Flight Information Region  + (a [[Flight Information Region]], which covers [[upper airspace]] only.)
  • Local code  + (a [[SSR code]] from a pool of codes not ma
    a [[SSR code]] from a pool of codes not managed by [[CCAMS]] (i.e. available to ATS Units only). This code can be assigned by ATS Units to flights in special circumstances, e.g. when the ATS Unit has not received a [[CCAMS Code]] in time. Each ATS unit will have its own pool of Local Codes.
    nit will have its own pool of Local Codes.)
  • Interline hub  + (a [[hub]] at which connections or transferring of traffic are chiefly made between flights or different carriers)
  • Intertropical convergence zone  + (a belt of low pressure which circles the E
    a belt of low pressure which circles the Earth near the equator where the trade winds of the Northern and Southern Hemispheres come together. It is characterised by convective activity which generates often vigorous thunderstorms over large areas. It is most active over continental land masses by day and relatively less active over the oceans.
    nd relatively less active over the oceans.)
  • Aviation VHF packet communications  + (a bit-oriented VHF air-ground data link wh
    a bit-oriented VHF air-ground data link which will provide the functionality, capacity, data integrity and system efficiencies that the aviation industry requires for future Air Traffic Services (ATS) and the current and future Airline Operational Communications (AOC) data communications. The AVPAC protocols are based on the ATN architecture and address the OSI lower layers protocols specific to the VHF sub network.
    protocols specific to the VHF sub network.)
  • ATFM departure slot  + (a calculated take-off time attributed by the central unit for ATFM with a time tolerance managed by the local ATS unit.)
  • Climate change  + (a change of climate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over comparable time periods.)
  • ATN host computer  + (a civil aeronautical computer system which contains one or more end user applications and that communicates using the ATN internet.)
  • Intended constraint update  + (a class representing the intention of the contributor to modify the [[constraint]], rejected by the manager.)
  • Closed Loop Clearance  + (a clearance from a point on the current RBT/RMT, to another point of the current RBT/RMT. It may result in a revision of the RBT/RMT.)
  • Combined Vision System  + (a combination of synthetic and enhanced vision systems.)
  • Non-scheduled air service  + (a commercial air transport service performed as other than a [[scheduled air service]].)
  • Collaborative Environmental Management  + (a commonly agreed strategic management process for establishing an airport environmental partnership, between the key operational stakeholders at an airport.)
  • Aerodrome Runway Incursion Assessment  + (a computer based assessment that assists Local Runway Safety Teams in assessing the possibility of runway incursions occurring at their airport)
  • Random-access memory  + (a computer memory on which data can be bot
    a computer memory on which data can be both read and written and on which the location of data does not affect the speed of its retrieval; especially: RAM that acts as the main storage available to the user for programs and datta - called also "random access memory".
    atta - called also "random access memory".)
  • Disruptive weather condition  + (a condition which is very unlikely to occu
    a condition which is very unlikely to occur, it has a severe impact on airport performance, but the airport does not have an appropriate organized response (this might be the case of heavy snow in Rome). In addition, convective weather might create disruptive conditions, even if the airport is well prepared to respond to weather.
    rt is well prepared to respond to weather.)
  • Direct to  + (a constraint defined by a point to which the flight has to go directly from the constraint application point which can be a navigation point or the current aircraft position.)
  • Vertical rate constraint  + (a constraint defined by an objective to constrain the rate of climb/descent (vertical evolution).)
  • Holding constraint  + (a constraint on a flight to follow a holding pattern during exit_time - entry_time.)
  • Business Rule  + (a constraint that determines the behaviour of an enterprise while achieving its goals and objectives.)
  • Tactical constraint  + (a constraint to apply on the flight.)
  • Global ATM performance hierarchy  + (a construct [...] illustrating (and reminding the reader) that the performance-based approach can be applied at different levels, ranging from high-level socio-political issues to lower-level technology.)
  • Automated En Route Air traffic control  + (a continuing Federal Aviation Administration (FAA) program to increase system capacity, safety, and the granting of user-preferred trajectories (e.g., direct routes) to airspace users.)
  • What-if Flight Object  + (a copy of the real [[Flight Object]], used to negotiate potential changes to the flight data without affecting the corresponding data for the actual flight.)
  • Flight Information Exchange Model  + (a data interchange format for sharing information about flights throughout their lifecycle.)
  • Digital NOTAM  + (a data set that contains in a structured format, which can be fully interpreted by an automated system without human interpretation, the information currently distributed by text NOTAM messages.)
  • CFMU Data Warehouse  + (a data warehouse used to store historical information of the core systems ETFMS, IFPS and ENV. It also stores statistics and key performance indicators in support of strategic, pre-tactical and tactical decision making.)
  • Data warehouse  + (a database in which data collected from several operational systems is integrated and stored by subject in such a way that it can be easily analysed, esp. for making informed management decisions.)
  • Route Catalogue  + (a database, maintained by the the Network Manager Operations Centre (NMOC), which contains the routes that can be accessed by the CFMU What-If-Rerouteing functions.)
  • Performance-based approach  + (a decision-making method based on three pr
    a decision-making method based on three principles: strong focus on desired/required results; informed decision-making driven by those desired/required results; and reliance on facts and data for decision-making. The PBA is a way of organizing the [[performance management process]].
    ng the [[performance management process]].)
  • Temporary Reserved Area  + (a defined volume of airspace normally unde
    a defined volume of airspace normally under the jurisdiction of one aviation authority and temporarily reserved, by common agreement, for the specific use by another aviation authority and through which other traffic may be allowed to transit, under ATC clearance.
    e allowed to transit, under ATC clearance.)
  • Temporary Segregated Area  + (a defined volume of airspace normally under the jurisdiction of one aviation authority and temporarily segregated, by common agreement, for the exclusive use by another aviation authority and through which other traffic will not be allowed to transit.)
  • Airspace restriction  + (a defined volume of airspace within which,
    a defined volume of airspace within which, variously, activities dangerous to the flight of aircraft may be conducted at specified times (a ‘[[danger area]]’); or such airspace situated above the land areas or territorial waters of a State, within which the flight of aircraft is restricted in accordance with certain specified conditions (a ‘ [[restricted area]] ’); or airspace situated above the land areas or territorial waters of a State, within which the flight of aircraft is prohibited (a ‘ [[prohibited area]] ’).
    is prohibited (a ‘ [[prohibited area]] ’).)
  • Project Work Breakdown Structure  + (a deliverable oriented hierarchical representation of the total scope of the project, and [...] a fundamental means to identify and manage the proper planning level and interface with the SJU (SESAR Joint Undertaking).)
  • Cost mechanism  + (a description of the potential costs of the project broken down into relevant cost categories (e.g. investment, operating).)
  • Underwater locator beacon  + (a device fitted to aviation flight recorders such as the cockpit voice recorder and flight data recorder.)
  • Cockpit Voice Recorder  + (a device used to record the audio environment in the flight deck for the purpose of investigation of accidents and incidents.)
  • Multi-Criteria Decision Analysis  + (a discipline aimed at supporting decisionmakers who are faced with making numerous and conflicting evaluations. MCDA aims at highlighting these conflicts and deriving how to arrive at a compromise in a transparent process.)
  • Joint Oil Analysis Program Certified  + (a facility certified to perform oil analysis for the U.S. military in accordance with Joint Oil Analysis Program (JOAP) regulations.)
  • Vortex ring  + (a flight condition in which helicopter main rotor lift is suddenly lost even though it is powered and loss of control results.)
  • Formation flight  + (a flight consisting of more than one aircraft which, by prior arrangement between the pilots, operates as a single aircraft with regard to navigation and position reporting, as well as clearances issued by ATC.)
  • Air-filed flight plan  + (a flight plan provided to an air traffic services unit by an aircraft during its flight.)
  • Surveillance flight  + (a flight that uses passive and/or active electronic and/or optical sensors to collect information data.)
  • Local ATFM unit  + (a flow management entity operating on behalf of one or more other flow management entities as the interface between the central unit for ATFM and an ATS unit or a group of such units.)
  • Standard military formation  + (a formation of aircraft flying under IFR in which each wingman aircraft will stay within 1 NM horizontally and 100 ft vertically of the lead aircraft.)
  • Non-standard formation  + (a formation that is operating outside the limits of a [[standard military formation]].)
  • Business Model  + (a framework for creating economic, social,
    a framework for creating economic, social, and/or other forms of value. The term' business model' is thus used for a broad range of informal and formal descriptions to represent core aspects of a business, including purpose, offerings, strategies, infrastructure, organizational structures, trading practices, and operational processes and policies.
    s, and operational processes and policies.)
  • Runway status light  + (a fully automatic advisory safety system w
    a fully automatic advisory safety system which provides direct alerts to both vehicles and pilots independently of the normal traffic control system operated by ATC. Its objective is to reduce both the number and severity of [[runway incursion]]s and thereby prevent runway collisions.
    ]]s and thereby prevent runway collisions.)
  • European Crisis Visualisation Interactive Tool for ATFCM  + (a functionality embedded in the [[NOP]] Portal, aiming to support management of crises and major disruptions in the European network)
  • Airport CDM Information Sharing Platform  + (a generic term used to describe the means at a [[CDM Airport]] of providing Information Sharing between the Airport CDM Partners.)
  • Duplicated secondary surveillance radar coverage  + (a given point in space for which the radar data used by an ATS unit for the surveillance function are derived from at least two independent SSR sources working simultaneously)
  • Collaborative Convective Forecast Product  + (a graphical representation of forecast convective occurrence verifying at 2-, 4 -, and 6-hours after issuance time.)
  • Low Level Wind Shear Alert System  + (a ground-based system for detecting the existence of [[wind shear]] close to an [[aerodrome]].)
  • Data set  + (a group of records in a fact table which l
    a group of records in a fact table which logically belong together. By including a data set dimension, performance data managers can load data for different versions, realities, assumptions or scenarios in the same table. Likewise, data sets can be used to distinguish between measured values (indicators) and targets.
    measured values (indicators) and targets.)
  • Air Traffic Management Operational Concept  + (a high-level description of the ATM servic
    a high-level description of the ATM services necessary to accommodate traffic at a given time horizon; a description of the anticipated level of performance required from, and the interaction between, the ATM services, as well as the objects they affect; and a description of the information to be provided to agents in the ATM system and how that information is to be used for operational purposes.
    on is to be used for operational purposes.)
  • Airspace Management Cell  + (a joint civil/military cell responsible for the day-to-day management and temporary allocation of national or sub-regional airspace under the jurisdiction of one or more ECAC state(s).)
  • Regulation cause  + (a keyword in the [[Slot Allocation Message
    a keyword in the [[Slot Allocation Message]]s (SAM) and [[Slot Revision Message]]s (SRM) in order to provide a description of delay caused to a flight by the most penalising regulation. It consists of a one letter reason code, a one letter location code (Departure, Enroute or Arrival) and the [[International Air Transport Association]] (IATA) delay code in two figure numerics.
    (IATA) delay code in two figure numerics.)
  • Wide-body aircraft  + (a large transport aircraft with internal cabin width sufficient for normal passenger seating to be divided into three axial groups by two aisles (in practice this means not less than 4.72 metres (15.6 feet).)
  • Operational Focus Area  + (a limited set of dependent operational and technical improvements related to an [[Operational sub-package]], comprising specific interrelated OIs designed to meet specific performance expectations of the ATM Performance Partnership.)
  • Domain  + (a logical grouping into areas relevant to business.)
  • Information product  + (a meaningful output comprising an implementation independent representation of required information for the achievement of goals an objectives.)
  • Acknowledgement message  + (a means whereby the [[IFPS]] indicates suc
    a means whereby the [[IFPS]] indicates successful processing of a submitted message against the environmental data held by Network Operations at the time of processing that message. Such a processing may only take into account the criteria specified by the relevant member states against which they require flight plan messages to be checked by the IFPS.
    t plan messages to be checked by the IFPS.)
  • Need  + (a measurable requirement that a service participant is actively seeking to satisfy.)
  • Predictability  + (a measure of delay variance against a perf
    a measure of delay variance against a performance dependability target. As the variance of expected delay increases, it becomes a very serious concern for airlines when developing and operating their schedules. Conceptually, predictability metrics should be a comparison of the actual flight time to the scheduled flight time, since the scheduled time includes the amount of expected delay at a targeted dependability performance.
    y at a targeted dependability performance.)
  • Carbon dioxide equivalent  + (a measure used to compare the emissions fr
    a measure used to compare the emissions from various greenhouse gases based upon their global warming potential. (For example, the global warming potential for methane over 100 years is 21. This means that emissions of one million metric tons of methane is equivalent to emissions of 21 million metric tons of carbon dioxide.)
    21 million metric tons of carbon dioxide.))
  • Slot Missed Message  + (a message originated by an aircraft operator when a slot time given in the [[Slot Allocation Message]] (SAM) cannot be achieved but where a new [[EOBT]] cannot be supplied.)
  • Slot Improvement Proposal Acceptance message  + (a message sent by an Aircraft Operator for a flight which has received a Slot Improvement Proposal ([[SIP]]). It is used to inform [[ETFMS]] that the proposed improved [[Calculated Take-Off Time]] (CTOT) is acceptable.)
  • Slot Improvement Proposal Rejection message  + (a message sent by an Aircraft Operator for
    a message sent by an Aircraft Operator for a flight having received a Slot Improvement Proposal ([[SIP]]) message. It is used to inform the [[ETFMS]] that the proposed improved [[Calculated Take-Off Time]] (CTOT) has been rejected. Thus the flight then keeps its original CTOT.
    s the flight then keeps its original CTOT.)
  • Rerouteing Proposal message  + (a message sent to an aircraft operator (AO) to offer a different [[CTOT]] or to avoid the need for a slot on a new route.)
  • First System Activation message  + (a message sent to the [[Enhanced Tactical Flow Management System]] (ETFMS) by an Air Traffic Control (ATC) computer when a flight is activated. The message includes flight level, entry time and position for the flight and is used to update ETFMS.)
  • European Common Aviation Area  + (a multilateral agreement signed in Decembe
    a multilateral agreement signed in December 2005 by the European Community and 9 partners (Albania, Bosnia and Herzegovina, Croatia, FYROM, Iceland, Montenegro, Norway, Serbia, the United Nations Interim Admnistration Mission in Kosovo). The ECAA commits the signatories to continue harmonising with EU legislation.
    continue harmonising with EU legislation.)
  • Flight Director  + (a navigational aid that is overlaid on the [[attitude indicator]] that shows the pilot of an aircraft the attitude required to follow a certain trajectory.)
  • Non-scheduled air carrier  + (a non-scheduled air carrier is one whose primary activity is non-scheduled operations.)
  • Staging area  + (a part of a [[data warehouse]] where raw source data is placed, prior to quality checking, transformation and subsequent loading into fact tables and dimension tables.)
  • Revenue passenger  + (a passenger for whose transportation an [[air carrier]] receives commercial remuneration.)
  • Stay constraint  + (a period of 'special activity' when the aircraft will 'stay' in the area defined for a given length of time.)
  • Device  + (a physical computational resource, upon which artefacts may be deployed for execution.)
  • Unmanned aerial vehicle  + (a pilotless aircraft, in the sense of Arti
    a pilotless aircraft, in the sense of Article 8 of the Convention on International Civil Aviation, which is flown without a pilot-in-command on-board and is either remotely and fully controlled from another place (ground, another aircraft, space) or programmed and fully autonomous.
    space) or programmed and fully autonomous.)
  • North European Functional Airspace Block  + (a planned expansion of the Swedish/Danish airspace block DK/ SE FAB. NEFAB encompasses the countries of Sweden, Norway, Denmark, Finland, Iceland, Estonia and Latvia.)
  • Departure Manager  + (a planning system to improve departure flows at one or more airports by calculating the [[Target Take-Off Time]] (TTOT) and [[Target Start Up Approval Time]] (TSAT) for each flight, taking multiple constraints and preferences into account.)
  • Terminal segment point  + (a point or a condition associated with a defined [[Segment Leg]].)
  • Trajectory significant point  + (a point that will be overflown and supposes a change in the profile or the conditions of the environment. It can be: · a manoeuvre begin or end point, · a boundary point, · both of them)
  • Horizontal Polar Diagram  + (a polar plot of the antenna's radiation pattern taken in the horizontal plane.)
  • Tactical Network Coordinator  + (a position in the [[CFMU]] operations room that monitors the overall tactical [[Air Traffic Flow and Capacity Management]] (ATFCM) situation to ensure the pan-European compatibility of ATFCM measures. Predecessor of the [[TNM]] position.)
  • Benefit  + (a positive impact of monetary value to stakeholders.)
  • RED Code  + (a pre-defined and agreed list of [[SSR cod
    a pre-defined and agreed list of [[SSR code]]s that will be made available after declaration of [[CCAMS]] contingency level RED in order to allow their allocation to ATS Units for assignment according to a predefined scheme. The RED codes are described in the CCAMS Contingency Plan.
    e described in the CCAMS Contingency Plan.)
  • Autoland approach  + (a precision instrument approach to touchdown and, in some cases, through the landing rollout. An autoland approach is performed by the aircraft autopilot which is receiving position information and/or steering commands from onboard navigation equipment.)
  • Taxi route  + (a predefined path from a [[runway]] to an [[Aircraft Stand]] (and vice versa). A taxi route is a sequence of [[taxiway]]s.)
  • Assessment of costs and benefits  + (a process to identify costs and benefits that will subsequently be used in a [[cost-benefit analysis]]. Ideally, values of the costs and benefits are also provided.)
  • International Aviation Safety Assessment  + (a programme established by the FAA with th
    a programme established by the FAA with the purpose to ensure that all aircraft operators registered outside United States that operate to or from the U.S. are properly licensed and are subject to safety oversight provided by a competent Civil Aviation Authority (CAA) in accordance with ICAO standards.
    y (CAA) in accordance with ICAO standards.)
  • Turnaround Integration in Trajectory And Network  + (a project in the EU’s Seventh Framework Pr
    a project in the EU’s Seventh Framework Programme, [...] aimed at analyzing the aircraft turnaround process with a view to identifying opportunities for improvements as well as to identify the potential influence of traditionally external processes like passenger flow and baggage handling.
    like passenger flow and baggage handling.)
  • Core Inventory of Air Emissions  + (a project performed since 1995 by the Euro
    a project performed since 1995 by the European Topic Centre on Air Emissions under contract to the European Environment Agency. The aim is to collect, maintain, manage and publish information on emissions into the air, by means of a European air emission inventory and database system. This concerns air emissions from all sources relevant to the environmental problems of climate change, acidification, eutrophication, tropospheric ozone, air quality and dispersion of hazardous substances.
    ty and dispersion of hazardous substances.)
  • Operational Concept  + (a proposed system in terms of the user nee
    a proposed system in terms of the user needs it will fulfil, its relationship to existing systems or procedures and the ways it will be used. It is used to obtain consensus among the acquirer, developer, support, and user agencies on the operational concept of a proposed system.
    operational concept of a proposed system.)
  • Reference operating environment  + (a real operating environment (OE) whose characteristics are used as a reference for Master Planning.)
  • Carrier phase tracking GNSS receiver  + (a receiver which, in addition to using normal GNSS data processing techniques all or part of the time, continuously tracks the carrier phases of GNSS navigational satellites and uses the resulting measurements to calculate its navigational solution.)
  • EUROCONTROL Route Charges System  + (a regional cost-recovery system that funds air navigation facilities and services and supports Air Traffic Management developments. It is operated by the EUROCONTROL Central Route Charges Office (CRCO), based in Brussels.)
  • STATFOR Industry Monitor  + (a regular e-mail briefing for EUROCONTROL
    a regular e-mail briefing for EUROCONTROL Member States and associated organisations on the air transport and related industries. It covers matters of relevance for understanding air transport statistics or preparing air transport forecasts. The Industry Monitor is produced according to the pace of change, at least monthly.
    g to the pace of change, at least monthly.)
  • Performance management process  + (a repetitive or continuous process which applies the principles of the [[performance-based approach]] to manage (generally improve) selected performance aspects of an organization or system (i.e. the air navigation system).)
  • TAP report  + (a report, published by STATFOR, that compares current year’s number of IFR flights with preceding year on a monthly basis per state or region. The figures compared are the DAIO totals, average number of flights and peak days.)
  • DAIO report  + (a report, published by STATFOR, that compa
    a report, published by STATFOR, that compares the current year’s number of IFR ([[Instrument Flight Rules]]) flights with preceding year on a monthly basis per state or region grouping in total and in the subcategories: (international) departures, (international) arrivals, internals and over-flights.
    nal) arrivals, internals and over-flights.)
  • Boundary Intermediate System  + (a router that supports IDRP and routes PDUs to more than one routing domain. (This term is defined in ICAO doc. 9705))
  • Scheduled international air service  + (a series of flights that possesses all the
    a series of flights that possesses all the following characteristics: a) it passes through the airspace over the territory of more than one State; b) it is performed by aircraft for the transport of passengers, mail or cargo for remuneration, in such a manner that each flight is open to use by members of the public; c) it is operated, so as to serve traffic between the same two or more points, either according to a published timetable or with flights so regular or frequent that they constitute a recognizably systematic series.
    nstitute a recognizably systematic series.)
  • Basic encoding rules  + (a set of Abstract Syntax Notation One encoding rules that define a specific way in which information may be encoded in a binary form. It is used as the underlying mechanism for encoding message.)
  • Data type  + (a set of distinct values, characterized by properties of those values and by operations on those values.)
  • Future ATM Profile  + (a set of distributed modelling and analysi
    a set of distributed modelling and analysing tools comprising ATFM simulation facilities as well as spreadsheet and macro based analysis and reporting tools.FAP (Future ATM Profiles) identifies geographical and functional causes for delays in Europe (airports&ACCs) and allows the evaluation of macroscopic capacity plans for a planning time horizon of up to 10 years.
    a planning time horizon of up to 10 years.)
  • Aviation system block upgrade  + (a set of improvements that can be implemented globally to enhance the performance of the ATM system.)
  • Automated weather observation system  + (a set of meteorological sensors, and associated systems designed to electronically collect and disseminate meteorological data.)
  • Milestone  + (a significant event that occurs during the planning or operation of a flight.)
  • Route Availability Document  + (a sole-source-planning document that combi
    a sole-source-planning document that combines Aeronautical Information Publication (AIP) Route Flow Restrictions with Air Traffic Flow & Capacity Management (ATFCM) routeing requirements designed to make the most effective use of Air Traffic Control (ATC) capacity.
    use of Air Traffic Control (ATC) capacity.)
  • Conditional Route Availability Message  + (a special consolidated ASM message issued
    a special consolidated ASM message issued daily by the CADF to promulgate in one message, on behalf of ECAC States, the AMC decisions on Conditional Routes availability notified by the AUPs for all the ECAC area. The CRAM is used by Aircraft Operators for flight planning purposes.
    ft Operators for flight planning purposes.)
  • Data mart  + (a specialized version of a [[Data warehous
    a specialized version of a [[Data warehouse]]. The key difference is that the creation of a data mart is predicated on a specific, predefined need for a certain grouping and configuration of select data from a [[Core Data Warehouse]]. The primary function of data marts is to make data available to users, i.e. to support performance data analysis and dissemination.
    rformance data analysis and dissemination.)
  • Point Merge  + (a specific P-RNAV procedure with built-in continuous descent ready for deployment in TMA.)
  • Free Route Airspace  + (a specific airspace within which users shall freely plan their routes between an entry point and an exit point without reference to the ATS route network. In this airspace, flights will remain subject to air traffic control.)
  • Monitored approach  + (a specific procedure for pilot task sharing. It involves one pilot flying (or managing) the aircraft on approach exclusively ‘head down’ by reference to the flight instruments whilst the other monitors.)
  • Free Flight Airspace  + (a specified volume of airspace within which autonomous operations will be allowed and the separation assurance responsibility will be fully transferred to the air.)
  • Information requirement  + (a statement of what an [[actor]] needs to know about objects in order to fulfil his tasks in the mission space.)
  • Operational sub-package  + (a sub-grouping of connected operational and technical improvements related to the [[Operational Package]] with closely related operational focus, designed to meet performance expectations of the ATM Performance Partnership.)
  • ATM Surveillance Tracker and Server  + (a surveillance data processing and distrib
    a surveillance data processing and distribution system, designed to establish an accurate picture of the air situation of all traffic in a specific geographical area, and to distribute the relevant processed surveillance information to a community of user systems.
    nformation to a community of user systems.)
  • CFMU Tactical System  + (a system [formerly] used by the Flow Manag
    a system [formerly] used by the Flow Management Division (FMD) and Flow Management Positions (FMP) for Tactical operations. TACT receives data from the [[Integrated Initial Flight Plan Processing System]] (IFPS) and the ENV Systems. Its main functions are: a) The presentation of the planned and actual traffic situation to enable the FMD and FMPs to monitor and modify the operation of the ATFM plan as required on the day of operation. b) The provision of [[Computer-Assisted Slot Allocation]] (CASA). c) The assessment of rerouteings for flows and individual flights.
    outeings for flows and individual flights.)
  • Full Authority Digital Engine Control  + (a system consisting of a digital computer
    a system consisting of a digital computer and ancillary components that control an aircraft’s engine and propeller. First used in turbine-powered aircraft, and referred to as full authority digital electronic control, these sophisticated control systems are increasingly being used in piston powered aircraft.
    gly being used in piston powered aircraft.)
  • Advanced Surface Movement Guidance and Control System  + (a system providing routing, guidance and s
    a system providing routing, guidance and surveillance for the control of aircraft and vehicles in order to maintain the declared surface movement rate under all weather conditions within the aerodrome visibility operational level (AVOL) while maintaining the required level of safety.
    maintaining the required level of safety.)
  • Aircraft in the future air traffic management system  + (a three-year project launched in April 200
    a three-year project launched in April 2000, investigating the cost-benefit relationship of combined innovative technologies, the regulatory, safety and service standards required for their safe and successful operation on a day-to-day basis, and the engineering and operational issues that these standards will need to address.
    that these standards will need to address.)
  • MergeStrip tool  + (a tool designed to assist controllers in [[CDO]] sequencing and separation.)
  • En-Route Manager  + (a tool that helps an ACC Planning Controller manage the en-route portion of a flight)
  • Ultra-high-capacity transport aircraft  + (a type of aircraft currently under consideration by some aircraft manufacturers which is expected to have over 600 seats.)
  • Business Interaction  + (a unit of behavior performed as a collaboration of two or more business roles.)
  • En-route charging zone  + (a volume of airspace for which a single cost-base and a single unit rate are established. It shall extend from the ground up to, and including, upper airspace.)
  • Nominal weather condition  + (a weather condition which is excellent or good to conduct airport operations: CAVOK, favourable winds, etc.)
  • Bandwidth  + (absolute value of the difference between the limiting frequencies of a frequency band.)
  • Pre-tactical ATFCM  + (action taken [by the CFMU] during the few
    action taken [by the CFMU] during the few days before the day of operation [of a flight]. Based on the traffic forecasts, the information received from the Flow Management positions at every ATC centre in Europe and the CFMU statistical data, the ATFM Notification Message (ANM) for the next day is prepared.
    essage (ANM) for the next day is prepared.)
  • Strategic ATFCM  + (activity [by the CFMU] taking place during
    activity [by the CFMU] taking place during the period from several months until a few days before a flight. During this phase, comparison is made between the expected air traffic demand and the potential ATC capacity. Objectives are set for each ATC unit in order for them to provide the required capacity.
    for them to provide the required capacity.)
  • Tactical delay  + (actual incurred delays)
  • Co-operative Separation Assurance  + (advanced surveillance enabler - consisting
    advanced surveillance enabler - consisting of exchanges of state and intent data from aircraft to aircraft - to delegate separation assurance applications, such as in-trail or station keeping manoeuvres, crossing manoeuvres, airborne conflict avoidance, to aircrew under given conditions
    oidance, to aircrew under given conditions)
  • Cooperative separation  + (airborne separation applications implying temporary delegation of the role of separator)
  • Updated flight position  + (aircraft position, updated by surveillance data, flight plan data or position reports.)
  • Uncontrolled airspace  + (airspace type of Class G and specified Class F airspace within which ATC service is not provided.)
  • Controlled Airspace  + (airspace type of defined dimensions within which air traffic control service is provided to IFR flights and to VFR flights in accordance with the airspace classification.)
  • Operational Air Traffic  + (all flights, which do not comply with the provisions stated for GAT and for which rules and procedures have been specified by appropriate national authorities.)
  • General Air Traffic  + (all movements of civil aircraft, as well as all movements of [[State aircraft]] (including military, customs and police aircraft) when these movements are carried out in conformity with the procedures of the ICAO.)
  • Open Loop Clearance  + (an ATC clearance that does not include a specified or implied point where the restriction on the trajectory ends.)
  • Air traffic services communications administrative domain  + (an ATN Administrative Domain owned and/or administered by an air traffic services organisation.)
  • European Airspace Use Plan  + (an AUP published by Network Operations daily at 17:00 local and disseminated for operators for flight planning purpose. It contains information on availability of CDR1 and CDR2 routes for a 24-hour period.)
  • Centralised Traffic Management Organisation  + (an ICAO concept which foresaw a central flow management unit supported by [[Flow Management Position]]s (FMPs) in each [[Area control centre]] (ACC).)
  • Open Loop Instruction  + (an [[ATC instruction]] that does not include a specified or implied point where the restriction on the trajectory ends and does not include a specified or implied return path to a downstream computed, known or expected trajectory.)
  • Conditional Route  + (an [[ATS route]] that is only available fo
    an [[ATS route]] that is only available for flight planning and use under specified conditions. A Conditional Route may have more than one category, and those categories may change at specified times: a) Category One - Permanently Plannable CDR: CDR1 routes are available for flight planning during times published in the relevant national Aeronautical Information Publication (AIP). b) Category Two - Non-Permanently Plannable CDR: CDR2 routes may be available for flight planning. Flights may only be planned on a CDR2 in accordance with conditions published daily in the CRAM, and c) Category Three - Not Plannable CDR: CDR3 routes are not available for flight planning; however, ATC Units may issue tactical clearances on such route segments.
    actical clearances on such route segments.)
  • Expanded route point  + (an abstraction of the information containe
    an abstraction of the information contained in the ADEXP field PT. It can contain the same information as a route point, and in addition, extra elements defined in the standard. Each expanded route point is associated with a route element (point or segment) in the original route that is the source of the point.
    nal route that is the source of the point.)
  • Route point  + (an abstraction of the point route elements that can appear both in the ICAO Field 15 (route) and in the expanded route.)
  • Mid-air collision  + (an accident where two aircraft come into contact with each other while both are in flight.)
  • Civil/Military Interface Standing Committee  + (an advisory body to the [EUROCONTROL] Coun
    an advisory body to the [EUROCONTROL] Council providing advice and guidance on those issues having an impact on military responsibilities. CMIC is composed of civil and military representatives at senior executive level from all the EUROCONTROL member States.
    el from all the EUROCONTROL member States.)
  • No-frills carrier  + (an air carrier that, unlike a [[full-service carrier]], focuses on providing low-cost air transport service to customers with simple or limited in-flight services.)
  • Full-service carrier  + (an air carrier, typically a traditional na
    an air carrier, typically a traditional national or major carrier that operates on a relatively extensive route network (thus also referred to as a network carrier) and provides a full range of services including different seating classes, in-flight entertainment, meals and beverages, on-board store, and ground facilities such as waiting lounges for premium class passengers or frequent flyer programme members
    engers or frequent flyer programme members)
  • Scheduled air service  + (an air service open to use by the general public and operated according to a published timetable or with such a regular frequency that it constitutes an easily recognizable systematic series of flights.)
  • Trunk service  + (an air service operated on routes linking major cities, usually with a large volume of traffic.)
  • Long-range aircraft  + (an aircraft capable of exceeding 5 556 kilometres (3 000 nautical miles) with a full payload at normal cruising conditions.)
  • Short take-off and landing aircraft  + (an aircraft designed for taking off and landing on short runways.)
  • Short-range aircraft  + (an aircraft having a non-stop flying range usually not exceeding 2 224 kilometres (1 200 nautical miles) with a full payload at normal cruising conditions.)
  • Narrow-body aircraft  + (an aircraft having only one aisle in the cabin with passenger seating divided into two axial groups.)
  • Subsonic aircraft  + (an aircraft incapable of sustaining level flight at speeds exceeding a Mach number of 1 (i.e. the speed of sound))
  • Continuous descent approach  + (an aircraft operating technique in which a
    an aircraft operating technique in which an arriving aircraft descends from an optimal position with minimum thrust and avoids level flight to the extent permitted by the safe operation of the aircraft and compliance with published procedures and ATC instructions.
    published procedures and ATC instructions.)
  • Airborne Separation Assistance System  + (an aircraft system that enables the flight crew to maintain separation of their aircraft from one or more aircraft, and provides flight information concerning surrounding traffic.)
  • System track  + (an aircraft trajectory calculated from plots coming form several radar sites or by combining several mono tracks)
  • Local track  + (an aircraft trajectory calculated from plots received during several rotations of one radar antenna)
  • Regional airport  + (an airport of a medium or small city which is mainly served by short haul regional services.)
  • Terminal charging zone  + (an airport or a group of airports for which a single cost-base and a single unit rate are established.)
  • Stolport  + (an airport specifically designed for [[STOL aircraft]] separate from conventional airport facilities.)
  • Reliever airport  + (an airport that diverts traffic from major commercial airports.)
  • Functional Airspace Block  + (an airspace block based on operational req
    an airspace block based on operational requirements and established regardless of State boundaries, where the provision of air navigation services and related functions are performance-driven and optimised with a view to introducing, in each functional airspace block,enhanced cooperation among air navigation service providers or, where appropriate, an integrated provider
    where appropriate, an integrated provider)
  • Airspace block  + (an airspace of defined dimensions, in space and time, within which air navigation services are provided.)
  • Cross-Border Area  + (an airspace restriction or reservation established over international borders for specific operational requirements. This may take the form of a [[Temporary Segregated Area]] (TSA) or [[Temporary Reserved Area]] (TRA).)
  • Cross-border airspace  + (an airspace structure extending across national borders and/or the boundaries of flight information regions.)
  • Commonly Agreed Methodology for Airport Airside Capacity Assessment  + (an analytical model designed to give a fast and accurate assessment airport airside capacity.)
  • NATO Architecture Framework  + (an architectural framework [used by NATO]
    an architectural framework [used by NATO] to define the operational context (organizations, locations, processes, information flows, etc.), the system architecture (interfaces, data specifications, protocols, etc.), and the supporting standards and documents that are necessary to describe the enterprise.
    are necessary to describe the enterprise.)
  • AMC-Manageable Area  + (an area subject to management and allocation by an AMC at Level 2.)
  • Technical architecture  + (an arrangement of physical elements which
    an arrangement of physical elements which provides design solutions to satisfy the requirements of the logical architecture (allocation of the modules or sub-modules to architecture components) and the manner in which they communicate with each other (communication principles, information exchanges and dynamic between those architecture components, middleware services).
    itecture components, middleware services).)
  • Local Area Augmentation System  + (an augmentation to GPS that focuses its service on the airport area (approximately a 20-30 mile radius).)
  • Trajectory Control by Ground Based Speed Adjustments  + (an automated de-confliction method that su
    an automated de-confliction method that supports conventional surveillance based operations. In this mode, automation support tools impose speed adjustments (horizontal and/or vertical) within a limited range and constrained to the medium term time horizon in order to tactically de-conflict traffic and reduce complexity and controller task load.
    educe complexity and controller task load.)
  • Digital Flight Data Acquisition Unit  + (an electronic device that collects, samples, conditions, and digitizes analog, discrete, and digital signals representing aircraft functions. It supplies a serial digital bit stream to the [[DFDR]].)
  • Flight Data Acquisition Unit  + (an electronic device that collects, sample
    an electronic device that collects, samples, conditions, and digitizes analog signals representing aircraft functions. The FDAU does not normally have the capability to condition digital signals. It provides data to the [[DFDR]] in a digital bit stream. See the definition for [[DFDAU]]. (See ARINC Characteristic 573.)
    [[DFDAU]]. (See ARINC Characteristic 573.))
  • Synthetic Vision System  + (an electronic means to display a computer-generated image of the applicable external topography from the perspective of the flight deck that is derived from aircraft attitude, altitude, position, and a coordinate-referenced terrain database.)