A
- abandoned takeoff
- abbreviated flight plan
- abbreviated precision approach path indicator
- abbreviated T visual approach slope indicator system
- abbreviated visual approach slope indicator system
- abeam
- abnormal procedure
- abnormal situation
- abnormal spin
- abort
- aborted takeoff
- above ground level
- above mean sea level
- abrasion
- absolute
- absolute altitude
- absolute ceiling
- absolute instrument
- accelerate-stop distance
- accelerate-stop distance available
- accelerate-stop distance required
- accelerated stall
- accelerated test factor
- accelerating pump
- acceleration
- acceleration error
- acceleration pump
- accelerometer
- acceptable level of safety performance
- accepting controller
- accepting unit
- access road
- accessory gearbox
- accident
- accident scene
- accident site
- acclimatisation
- acclimatization
- accommodation note
- accountable passenger traffic document
- accountable traffic document
- accumulated temperature
- accumulation
- accuracy
- acknowledgement
- aclinic line
- acoustic ear muffs
- acrobatic flight
- across track error
- active runway
- active satellite
- actual landing distance
- actual time of arrival
- actual time of departure
- actual time of observation
- ADF receiver
- adiabat
- adiabatic
- adiabatic chart
- adiabatic cooling
- adiabatic diagram
- adiabatic gradient
- adiabatic lapse rate
- adiabatic process
- adiabatic trail
- adjustable-pitch propeller
- adjustable pitch propeller
- adjustable propeller
- adult
- adult fare
- advance passenger information
- advance seat reservation
- advanced passenger information
- advanced surface movement guidance and control system
- advanced visual docking guidance system
- advection
- advection fog
- advection of moisture
- advection of temperature
- advective thunderstorm
- adverse yaw
- advisory airspace
- advisory area
- advisory route
- advisory service
- aerial delivery
- aerial dusting
- aerial marker
- aerial photogrammetry
- aerial photography
- aerial refueling
- aerial spraying
- aerial survey
- aerial work
- aero-engine
- aero engine
- aerobatic
- aerobatic flight
- aerobridge
- aeroclub
- aerodrome
- aerodrome beacon
- aerodrome category
- aerodrome chart
- aerodrome control service
- aerodrome control tower
- aerodrome elevation
- aerodrome emergency plan
- aerodrome field length
- aerodrome fire station
- aerodrome flight information service
- aerodrome forecast
- aerodrome identification sign
- aerodrome mapping data
- aerodrome mapping database
- aerodrome meteorological minima
- aerodrome obstacle chart
- aerodrome obstruction chart
- aerodrome operating minima
- aerodrome operator
- aerodrome pressure altitude
- aerodrome reference point
- aerodrome routine meteorological report
- aerodrome special meteorological report
- aerodrome traffic
- aerodrome traffic circuit
- aerodrome traffic control tower
- aerodrome traffic density
- aerodrome traffic zone
- aerodrome warning
- aerodromes, air routes and ground aids
- aeródromo de alternativa de decolagem [POR]
- aeródromo de alternativa de rota [POR]
- aeródromo de alternativa e rota ETOPS [POR]
- aerodynamic balance
- aerodynamic center
- aerodynamic coefficient
- aerodynamic forces
- aerodynamic heating
- aerodynamic lift
- aerodynamic twist
- aerodynamics
- aerodyne
- aerofoil
- aerological diagram
- aeromedical evacaution system
- aeromedical evacuation
- aeronautical administrative communications
- aeronautical beacon
- aeronautical chart
- aeronautical emergency
- aeronautical fixed service
- aeronautical fixed telecommunications network
- aeronautical ground light
- aeronautical incident
- aeronautical information circular
- aeronautical information management
- aeronautical information publication
- aeronautical information regulation and control
- aeronautical information service
- aeronautical meteorological office
- aeronautical meteorological service
- aeronautical meteorological station
- aeronautical mobile satellite service
- aeronautical mobile service
- aeronautical operational control
- aeronautical product
- aeronautical radionavigation service
- aeronautical station
- aeronautical station operator
- aeronautical telecommunication station
- aeronautical telecommunications network
- aerophobia
- aeroplane
- aeroplane reference field length
- aeroplane upset
- aeroporto não declarado
- aerospace
- aerospace vehicle
- aerostat
- aerothermodynamic duct (athodyd)
- after-burner
- afterburner
- afterburning
- aftercooler
- aging aircraft
- agonic line
- agricultural aviation
- agricultural operations
- aid to air navigation
- aid to navigation
- aileron
- aileron angle
- aileron cables
- aileron droop
- aileron up-float
- ailerons
- aiming point
- aiming point marking
- AIP amendment
- air-breathing engine
- air-compressor intake throttle
- air-conditioning system
- air-conditioning unit
- air-ground communication
- air-intake casing
- air-intake oil cooler
- air-minded
- air-report
- air-to-air
- air-to-air missile
- air-to-air refueling
- air-to-ground
- air-to-ground communication
- air-to-ground missile
- air-transiting
- air base
- air brake
- air bridge
- air cargo
- air cargo terminal
- air carrier
- air carrier certificate
- air course
- air cushion vehicle
- air data computer
- air defence
- air defense identification zone
- air density
- air discharge valve
- air embolism
- air express
- air filed flight plan
- air filter
- air frame
- air freedoms
- air freight
- air freight forwarder
- air freight priority
- air humidity
- air inlet
- air inlet duct
- air jet
- air launch
- air manifest of cargo
- air marker
- air mass
- air mass thunderstorm
- air navigation
- air navigation aid
- Air Navigation Bureau
- Air Navigation Commission
- air navigation facility
- air navigation service provider
- air navigation services
- air operator certificate
- air refueling
- air route surveillance radar
- air route traffic control center
- air scoop
- air show
- air sickness
- air side
- air space
- air speed
- air sports
- air taxi
- air temperature
- air ticket
- air traffic
- air traffic clearance
- air traffic control
- Air Traffic Control Centre
- air traffic control clearance
- air traffic control officer
- air traffic control surveillance minimum altitude chart
- air traffic control tower
- air traffic controller
- air traffic flow
- air traffic flow management
- air traffic incident
- air traffic management
- air traffic management system
- air traffic separation
- air traffic service
- air traffic services interfacility data communications
- air traffic services unit
- air transit route
- Air Transport
- air transport agreement
- air transportation
- air travel ticket
- air turbine motor
- air volume
- air waybill
- AIRAC system
- airbag restraint systems
- airbag system
- airblast atomizer
- airborne
- airborne collision avoidance system
- airborne early warning
- airborne equipment
- airborne situational awareness
- airborne tactical data system
- airbridge
- aircraft
- aircraft accident
- aircraft address
- aircraft approach category
- aircraft based augmentation system
- aircraft boarding staircase
- aircraft call sign
- aircraft carrier
- aircraft category
- aircraft certificated for single-pilot operation
- aircraft classification number
- aircraft communications addressing and reporting system
- aircraft configuration
- aircraft container
- aircraft crew member
- aircraft debogging
- aircraft defueling
- aircraft dinghy
- aircraft dispatcher
- aircraft earth station
- aircraft engine
- aircraft external lights
- aircraft flight manual
- aircraft fueling
- aircraft fuelling operation
- aircraft gas turbine engine
- aircraft gross weight
- aircraft group
- aircraft identification
- aircraft in distress
- aircraft interchange data system
- aircraft jacking
- aircraft maintenance mechanic
- aircraft maintenance truck
- aircraft marshaller
- aircraft movement
- aircraft movement area
- aircraft nationality mark
- aircraft nose
- aircraft observation
- aircraft on ground
- aircraft operating manual
- aircraft operator
- aircraft pallet net
- aircraft parking position
- aircraft parking/docking chart
- aircraft pitch
- aircraft recovery
- aircraft recovery operation
- aircraft registration
- aircraft registration mark
- aircraft rescue and firefighting
- aircraft salvage
- aircraft security check
- aircraft situational display to industry
- aircraft stand
- aircraft stand manoeuvring guidance lights
- aircraft stand taxilane
- aircraft upset
- aircraft wreckage
- aircrew
- airfare
- airfield capacity model
- airfoil
- airfoil profile
- airfoil section
- airframe
- airline (1)
- airline (2)
- airline alliance
- airline pilot
- airline prefix
- airline transport pilot (ATP)
- airmail
- airman
- airman's information manual
- airman's meteorological information
- airmanship
- airmass thunderstorm
- airpass
- airplane
- airplane envelope
- airplane flight instructor
- airplane flight manual
- airport
- airport acceptance rate
- airport capacity
- airport category
- airport emergency plan
- airport emergency response
- airport fire station
- airport infrastructure
- airport level
- airport operator
- airport reference point
- airport security officer
- airport site
- airport slot
- airport surface detection equipment
- airport surveillance radar
- airport system
- airscrew
- airship
- airshow
- airsickness
- airside
- airspace
- airspace control
- airspeed
- airspeed indicator
- airway
- airways observation
- airworthiness certificate
- airworthiness directive
- airworthiness limitations
- airworthy
- AIS unit
- albedo
- albedograph
- albedometer
- alert area
- alert phase
- alerting service
- alfa
- alighting
- alignment bar
- all-cargo aeroplane
- all-cargo aircraft
- all-purpose structured eurocontrol surveillance data information exchange
- all-up weight
- all moving tailplane
- alliance
- allowable engine operating time
- alternate aerodrome
- alternate airport
- alternating
- altimeter
- altimeter check location
- altimeter setting
- altimetry
- altitude
- altitude acclimatization
- altitude chamber
- altitude da cabina [POR]
- altitude deviation
- altitude encoder
- altitude engine
- altitude indicator
- altitude sickness
- altocumulus
- altocumulus cloud
- altostratus
- amber
- ambient
- ambient pressure
- ambient temperature
- ambulift
- amended meteorological message
- amphibian aircraft
- amphibian gyroplane
- amphibian helicopter
- amphibian ornithoper
- anaphylactic reaction
- anaphylactic shock
- anaphylaxis
- anemometer
- angle of approach indicator
- angle of attack
- angle of attack indicator
- angle of climb
- angle of depression
- angle of descent
- angle of deviation
- angle of downwash
- angle of incidence
- angle of pitch
- angle of roll
- angle of sidewash
- angle of twist
- angle of upwash
- angular accelerometer
- angular velocity
- anisotropic
- annoyance noise level
- annular combustion chamber
- annunciator
- antenna
- antenna mast
- antenna pair
- anti-ice
- anti-ice bleed
- anti-icing
- anti-icing bleed
- anti-rolling wire
- anti-skid inoperative
- anti-skid system
- anti-torque rotor
- anti-yaw aileron
- anticollision light
- anticyclone
- antitorque
- antitorque system failure
- anvil
- anvil cloud
- apex
- appliance
- approach
- approach angle
- approach area
- approach control
- approach control office
- approach control radar
- approach control service
- approach idling conditions
- approach light system
- approach lighting aid
- approach lighting system
- approach procedure with vertical guidance
- approach sequence
- approach slope
- approach speed
- approach surface
- approach to stall
- approved
- apron
- apron management service
- apron safety lines
- apron taxiway
- aquaplaning
- aquaplaning limit
- aqueous vapour
- area chart
- area control center
- area forecast
- area load limitation
- area minimum altitude
- area navigation
- armed forces
- arresting gear
- arresting system
- arrival
- arrival report
- arrival time
- arrivals
- arrow engine
- arterial gas embolism (AGE)
- articulated rotor
- articulated rotor system
- artificial horizon
- artificial stall warning
- ascend to
- ascending to
- ash content
- aspect ratio
- asphalt
- assembly
- assigned altitude deviation
- assisted take-off
- asymmetric flight
- ATC clearance
- athwartships
- ATM community
- atmosphere
- atmospheric absorption
- atmospheric electricity
- atmospheric pressure
- atomic clock
- attention
- attitude
- attitude indicator
- attitude relative to the ground
- audio panel
- augmentation system
- authorized
- auto-brake
- auto-stabilizer
- auto-throttle
- auto-thrust
- autobrake
- autoclave
- autoclave casting
- autogyro
- autogyro rotorcraft
- autoland
- automated data interchange system
- automated external defibrillator
- automated terminal information service
- automated ticket
- automatic altitude reporting
- automatic control
- automatic cut-out valve
- automatic dependent surveillance
- automatic dependent surveillance - addressable
- automatic dependent surveillance - broadcast
- automatic dependent surveillance - contract
- automatic dependent surveillance unit
- automatic direction finder
- automatic flare
- automatic flight control system
- automatic landing
- automatic mixture control
- automatic parachute
- automatic picture-transmission system
- automatic pilot
- automatic press
- automatic radio direction finder
- automatic takeoff thrust control system
- automatic terminal information system
- automatic volume control
- autonomous aircraft
- autonomous runway incursion warning system
- autopilot
- autorotation
- autothrottle
- autothrust
- auxiliary
- auxiliary fuel pump
- auxiliary landing gear
- auxiliary power unit
- auxiliary rotor
- auxiliary tank
- availability
- available
- avcat
- average burn rate
- avgas
- aviation
- aviation carrier turbine
- aviation gasoline
- aviation maintenance technician
- aviation routine weather report
- aviation safety action program
- aviation security
- aviation service providers
- aviation training device
- aviation turbine gasoline
- aviation weather observation
- avionics
- avtag
- avtur
- axes
- axial-flow compressor
- axial-flow turbine
- axial compressor
- axial engine
- axial girder
- axial winding
- axial wire
- azimuth
- azimuth guidance unit