A - Aviation Glossary
- Abbreviated IFR Flight Plans
- Abeam
- Abort
- Absolute accuracy
- Absolute altitude
- Absolute pressure
- AC
- Accelerate-go distance
- Accelerate-Stop Distance
- Accelerate-Stop Distance Available (ASDA)
- Accelerate-Stop Distance Available (ASDA) [ICAO]
- Acceleration
- Acceleration error
- Accelerometer
- Acknowledge
- Acrobatic Flight
- Acrobatic Flight [ICAO]
- Active Runway
- Actual Calculated Landing Time (ACLT)
- Actual Navigation Performance (ANP)
- Additional Services
- Adiabatic cooling
- Adiabatic heating
- Adjustable stabilizer
- Adjustable-pitch propeller
- Administrator
- Advanced Air Mobility (AAM)
- Advection fog
- Adverse yaw
- Advise Intentions
- Advisory
- Advisory Circular (AC)
- Advisory Frequency
- Advisory Service
- Aerial Refueling
- Aerodrome
- Aerodrome Beacon [ICAO]
- Aerodrome Control Service [ICAO]
- Aerodrome Control Tower [ICAO]
- Aerodrome Elevation [ICAO]
- Aerodrome Traffic Circuit [ICAO]
- Aerodynamic coefficients
- Aerodynamics
- Aeronautical Beacon
- Aeronautical Chart
- Aeronautical Chart [ICAO]
- Aeronautical decision-making (ADM)
- Aeronautical Information Manual (AIM)
- Aeronautical Information Publication (AIP) [ICAO]
- AFFIRMATIVE
- AGL
- Agonic line
- Ailerons
- Air carrier
- Air Carrier District Office (ACDO)
- Air commerce
- Air Data Computer (ADC)
- Air Defense Emergency
- Air Defense Identification Zone (ADIZ)
- Air Mass
- Air Navigation Facility
- Air Route Surveillance Radar (ARSR)
- Air Route Traffic Control Center (ARTCC)
- Air Taxi
- Air Traffic
- Air Traffic [ICAO]
- Air Traffic Clearance
- Air Traffic Control (ATC)
- Air Traffic Control Clearance [ICAO]
- Air traffic control radar beacon system (ATCRBS)
- Air Traffic Control Service
- Air Traffic Control Service [ICAO]
- Air Traffic Control Specialist
- Air Traffic Control System Command Center (ATCSCC)
- Air Traffic Organization (ATO)
- Air Traffic Service
- Air Traffic Service (ATS) Routes
- Air transportation
- Airborne
- Airborne Delay
- Aircraft
- Aircraft [ICAO]
- Aircraft altitude
- Aircraft Approach Category
- Aircraft Classes
- Aircraft Conflict
- Aircraft engine
- Aircraft Hazard Area (AHA)
- Aircraft List (ACL)
- Aircraft Surge Launch And Recovery (ASLR)
- Aircraft Wake Turbulence Categories
- Airfoil
- Airframe
- Airmen's Meteorological Information (AIRMET)
- AIRMET (WA)
- Airplane
- Airplane Flight Manual (AFM)
- Airplane Owner/Information Manual
- Airport
- Airport Advisory Area
- Airport Arrival Rate (AAR)
- Airport Departure Rate (ADR)
- Airport Diagram
- Airport Elevation
- Airport Facility Directory (AFD)
- Airport Lighting
- Airport Marking Aids
- Airport Reference Point (ARP)
- Airport Reservation Office
- Airport Rotating Beacon
- Airport Stream Filter (ASF)
- Airport Surface Detection Equipment (ASDE)
- Airport Surveillance RADAR (ASR)
- Airport Taxi Charts
- Airport Traffic Control Service
- Airship
- Airspace Conflict
- Airspace Flow Program (AFP)
- Airspace Hierarchy
- Airspeed
- Airspeed indicator
- Airstart
- Airway
- Airway [ICAO]
- Airway Beacon
- Airworthiness Certificate
- Airworthiness Directive
- ALERFA (Alert Phase) [ICAO]
- Alert
- Alert Area
- Alert Notice (ALNOT)
- Alerting Service
- All Cargo Operation
- Almanac data
- Along-Track Distance (ATD)
- Alphanumeric Display
- ALS
- Alternate Aerodrome [ICAO]
- Alternate airport
- Alternate static source valve
- Altimeter
- Altimeter Setting
- Altitude
- Altitude [ICAO]
- Altitude engine
- Altitude Readout
- Altitude Reservation (ALTRV)
- Altitude Restriction
- ALTITUDE RESTRICTIONS ARE CANCELED
- Amateur rocket
- Ambient pressure
- Ambient temperature
- Amendment status
- Ammeter
- Aneroid
- Aneroid barometer
- Angle of attack
- Angle of incidence
- Anhedral
- Annual inspection
- Anti-ice
- Antiservo tab
- Appliance
- Approach Clearance
- Approach Control Facility
- Approach Control Service
- Approach Control Service [ICAO]
- Approach Gate
- Approach Lighting System (ALS)
- Approach Sequence
- Approach Sequence [ICAO]
- Approach Speed
- Approach With Vertical Guidance (APV)
- Approach/Departure Hold Area
- Appropriate Ats Authority [ICAO]
- Appropriate Authority
- Appropriate Obstacle Clearance Minimum Altitude
- Appropriate Terrain Clearance Minimum Altitude
- Approved
- Apron
- Apron [ICAO]
- APU
- ARC
- Area chart
- Area Control Center [ICAO]
- Area forecast (FA)
- Area Navigation (RNAV)
- Area Navigation (RNAV) Approach Configuration
- Area Navigation (RNAV) Global Positioning System (GPS) Precision Runway Monitoring (PRM) Approach
- Area Navigation (RNAV) Route
- ARINC
- Armed Forces
- Army Aviation Flight Information Bulletin (USAFIB)
- Arresting System
- Arrival Aircraft Interval (AAI)
- Arrival Center
- Arrival Delay (ADLY)
- Arrival Sector
- Arrival Sector Advisory List
- Arrival Sequencing Program (ASP)
- Arrival Time
- ASR
- Associated
- Asymmetric thrust. Also known as P-factor
- ATC ADVISES
- ATC Assigned Airspace (ATCAA)
- ATC Clearance
- ATC CLEARS
- ATC Instructions
- ATC Preferred Route Notification
- ATC Preferred Routes
- ATC REQUESTS
- ATC Security Services
- ATC Security Services Position
- Atc Security Tracking
- ATC Surveillance Source
- ATCRBS
- ATCSCC
- ATCT
- Atmospheric propagation delay
- ATS
- ATS Route [ICAO]
- ATS Surveillance Service [ICAO]
- ATS Surveillance System [ICAO]
- ATTENTION ALL USERS PAGE (AAUP)
- Attitude
- Attitude and heading reference system (AHRS)
- Attitude director indicator (ADI)
- Attitude indicator
- Attitude instrument flying
- Attitude management
- Autokinesis
- Autoland Approach
- Automated Information Transfer (AIT)
- Automated Mutual-Assistance Vessel Rescue System (AMVER)
- Automated Problem Detection (APD)
- Automated Problem Detection Boundary (APB)
- Automated Problem Detection Inhibited Area (APDIA)
- Automated Radar Terminal Systems (ARTS)
- Automated Surface Observing System (ASOS)
- Automated UNICOM
- Automated Weather Observing System (AWOS)
- Automated Weather System
- Automatic Altitude Report
- Automatic Altitude Reporting
- Automatic Carrier Landing System (ACLS)
- Automatic Dependent Surveillance (ADS) [ICAO]
- Automatic Dependent Surveillance-Broadcast (ADS-B)
- Automatic Dependent Surveillance-Broadcast IN (ADS-B In)
- Automatic Dependent Surveillance-Broadcast OUT (ADS-B Out)
- Automatic Dependent Surveillance-Contract (ADS-C)
- Automatic Dependent Surveillance-Rebroadcast (ADS-R)
- Automatic dependent surveillance—broadcast (ADS–B)
- Automatic Direction Finder (ADF)
- Automatic Flight Information Service (AFIS) - Alaska FSSs Only
- Automatic Terminal Information Service (ATIS)
- Automatic Terminal Information Service (ATIS) [ICAO]
- Autopilot
- Autorotation
- Auxiliary rotor
- Available Landing Distance (ALD)
- Aviation medical examiner (AME)
- Aviation Routine Weather Report (METAR)
- Aviation Weather Service
- AWW
- Axes of an aircraft
- Axial flow compressor
- Azimuth card