1,345 terms
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1 group (METAR remarks)
METAR Remarks
6-Hour Maximum Temperature
The 1 group reports the 6-hour maximum temperature in tenths of a degree Celsius.
2 group (METAR remarks)
METAR Remarks
6-Hour Minimum Temperature
The 2 group reports the 6-hour minimum temperature in tenths of a degree Celsius.
5 group (METAR remarks)
METAR Remarks
3-Hour Pressure Tendency
The 5 group reports the pressure tendency over the past 3 hours.
6 group (METAR remarks)
METAR Remarks
3/6-Hour Precipitation Amount
The 6 group reports 3- and 6-hour precipitation amount.
7 group (METAR remarks)
METAR Remarks
24-Hour Precipitation Amount
The 7 group reports 24-hour precipitation amount.
A TOMATO FLAMES vs. GOOSE A CAT
Mnemonics
Equipment Mnemonic Variants
Different instructors teach different mnemonics for the same rule. ATOMATOFLAMES and A TOMATO FLAMES are the same list; GOOSE A CAT is…
AAM
Airspace
ADVANCED AIR MOBILITY (AAM)
A transportation system that transports people and property by air between two points in the NAS using aircraft with advanced technologies, including…
AAR
Airspace
AIRPORT ARRIVAL RATE (AAR)
A dynamic input parameter specifying the number of arriving aircraft which an airport or airspace can accept from the ARTCC per hour.…
ABRR
ATC & Communications
AIRBORNE REROUTE (ABRR)
A capability within the Traffic Flow Management System used for the timely development and implementation of tactical reroutes for airborne aircraft. This…
AC
Flight Planning
ADVISORY CIRCULAR (AC)
An FAA publication, advisory and descriptive in nature, which is not regulatory. Listed in the Pilot/Controller Glossary as a cross-reference to ADVISORY…
ACC [ICAO]
General Aviation
See ICAO term AREA CONTROL CENTER.
ACCELERATE‐STOP DISTANCE AVAILABLE
Airport Operations
The runway plus stopway length declared available and suitable for the acceleration and deceleration of an airplane aborting a takeoff.
ACCELERATE‐STOP DISTANCE AVAILABLE [ICAO]
General Aviation
The length of the take‐off run available plus the length of the stopway if provided.
ACDO
General Aviation
An FAA field office serving an assigned geographical area, staffed with Flight Standards personnel serving the aviation industry and the general public…
ACKNOWLEDGE
ATC & Communications
Let me know that you have received and understood this message.
ACL
Airspace
AIRCRAFT LIST (ACL)
A view available with EDST that lists aircraft currently in or predicted to be in a particular sector's airspace. The view contains…
ACLS
Instrument Procedures
U.S. Navy final approach equipment consisting of precision tracking radar coupled to a computer data link to provide continuous information to the…
ACROBATIC FLIGHT
General Aviation
An intentional maneuver involving an abrupt change in an aircraft's attitude, an abnormal attitude, or abnormal acceleration not necessary for normal flight.
ACROBATIC FLIGHT [ICAO]
General Aviation
Maneuvers intentionally performed by an aircraft involving an abrupt change in its attitude, an abnormal attitude, or an abnormal variation in speed.
ACTIVE RUNWAY
Instrument Procedures
Any runway or runways currently being used for takeoff or landing. When multiple runways are used, they are all considered active runways.…
ACTUAL NAVIGATION PERFORMANCE (ANP)
Airspace
ANP
A statement of the navigational performance necessary for operation within a defined airspace. The following terms are commonly associated with RNP: Required…
ADAPTED ROUTES
Instrument Procedures
Departure and/or arrival routes that are adapted in ARTCC ERAM computers to accomplish inter/intrafacility controller coordination and to ensure that flight data…
ADAR
Instrument Procedures
Departure and/or arrival routes that are adapted in ARTCC ERAM computers to accomplish inter/intrafacility controller coordination and to ensure that flight data…
ADDITIONAL SERVICES
Weather Services
Advisory information provided by ATC which includes but is not limited to the following: Traffic advisories. Vectors, when requested by the pilot,…
ADF
Navigation
An aircraft radio navigation system which senses and indicates the direction to a L/MF nondirectional radio beacon (NDB) ground transmitter. Direction is…
ADIZ
Airspace
Air Defense Identification Zone
An Air Defense Identification Zone — airspace within which the ready identification, location and control of aircraft is required in the interest…
ADLY
Airport Operations
A parameter which specifies a period of time in which no aircraft will be metered for arrival at the specified airport. Listed…
ADM
Aeronautical Decision Making A systematic approach to the mental process used by pilots to consistently determine the best course of action in…
ADMINISTRATOR
General Aviation
The Federal Aviation Administrator or any person to whom he/she has delegated his/her authority in the matter concerned.
ADR
Instrument Procedures
Departure and/or arrival routes that are adapted in ARTCC ERAM computers to accomplish inter/intrafacility controller coordination and to ensure that flight data…
ADS [ICAO]
General Aviation
See ICAO term AUTOMATIC DEPENDENT SURVEILLANCE.
ADS-B
Avionics
Automatic Dependent Surveillance – Broadcast
Automatic Dependent Surveillance – Broadcast. ADS-B Out broadcasts the aircraft’s GPS position, altitude and velocity; ADS-B In receives traffic (TIS-B) and weather…
ADS-C
ATC & Communications
AUTOMATIC DEPENDENT SURVEILLANCE-CONTRACT (ADS-C)
A data link position reporting system, controlled by a ground station, that establishes contracts with an aircraft's avionics that occur automatically whenever…
ADVANCED AIR MOBILITY (AAM)
Airspace
AAM
A transportation system that transports people and property by air between two points in the NAS using aircraft with advanced technologies, including…
ADVISE INTENTIONS
General Aviation
Tell me what you plan to do.
ADVISORY
General Aviation
Advice and information provided to assist pilots in the safe conduct of flight and aircraft movement.
ADVISORY CIRCULAR (AC)
Flight Planning
AC
An FAA publication, advisory and descriptive in nature, which is not regulatory.
ADVISORY FREQUENCY
ATC & Communications
The appropriate frequency to be used for Airport Advisory Service.
ADVISORY SERVICE
General Aviation
Advice and information provided by a facility to assist pilots in the safe conduct of flight and aircraft movement.
ADW
Instrument Procedures
ARRIVAL/DEPARTURE WINDOW (ADW)
A depiction presented on an air traffic control display, used by the controller to prevent possible conflicts between arrivals to, and departures…
AERIAL REFUELING
Flight Planning
A procedure used by the military to transfer fuel from one aircraft to another during flight.
AERODROME
Aerodynamics & Performance
A defined area on land or water (including any buildings, installations and equipment) intended to be used either wholly or in part…
AERODROME BEACON [ICAO]
ATC & Communications
Aeronautical beacon used to indicate the location of an aerodrome from the air.
AERODROME CONTROL SERVICE [ICAO]
ATC & Communications
Air traffic control service for aerodrome traffic.
AERODROME CONTROL TOWER [ICAO]
ATC & Communications
A unit established to provide air traffic control service to aerodrome traffic.
AERODROME ELEVATION [ICAO]
Airport Operations
The elevation of the highest point of the landing area.
AERODROME TRAFFIC CIRCUIT [ICAO]
General Aviation
The specified path to be flown by aircraft operating in the vicinity of an aerodrome.
AERONAUTICAL BEACON
Navigation
A visual NAVAID displaying flashes of white and/or colored light to indicate the location of an airport, a heliport, a landmark, a…
AERONAUTICAL CHART
Airspace
A map used in air navigation containing all or part of the following: topographic features, hazards and obstructions, navigation aids, navigation routes,…
AERONAUTICAL CHART [ICAO]
Navigation
A representation of a portion of the earth, its culture and relief, specifically designated to meet the requirements of air navigation.
Aeronautical Decision Making (ADM)
Aeromedical
ADM
A systematic approach to the mental process used by pilots to consistently determine the best course of action in response to a…
AERONAUTICAL INFORMATION MANUAL (AIM)
Airspace
AIM
A primary FAA publication whose purpose is to instruct airmen about operating in the National Airspace System of the U.S. It provides…
AERONAUTICAL INFORMATION PUBLICATION (AIP) [ICAO]
Navigation
A publication issued by or with the authority of a State and containing aeronautical information of a lasting character essential to air…
AERONAUTICAL INFORMATION SERVICES (AIS)
General Aviation
AIS
A facility in Silver Spring, MD, established by FAA to operate a central aeronautical information service for the collection, validation, and dissemination…
AFFIRMATIVE
General Aviation
Yes.
AFIS
General Aviation
See AUTOMATIC FLIGHT INFORMATION SERVICE - ALASKA FSSs ONLY.
AFP
Airspace
AIRSPACE FLOW PROGRAM (AFP)
AFP is a Traffic Management (TM) process administered by the Air Traffic Control System Command Center (ATCSCC) where aircraft are assigned an…
AGL
General Aviation
Above Ground Level
Altitude expressed as height above ground level, rather than above sea level.
AHA
ATC & Communications
AIRCRAFT HAZARD AREA (AHA)
Used by ATC to segregate air traffic from a launch vehicle, reentry vehicle, amateur rocket, jettisoned stages, hardware, or falling debris generated…
AIM
Airspace
AERONAUTICAL INFORMATION MANUAL (AIM)
A primary FAA publication whose purpose is to instruct airmen about operating in the National Airspace System of the U.S. It provides…
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A
- A TOMATO FLAMES vs. GOOSE A CAT
- AAM
- AAR
- ABRR
- AC
- ACC [ICAO]
- ACCELERATE‐STOP DISTANCE AVAILABLE
- ACCELERATE‐STOP DISTANCE AVAILABLE [ICAO]
- ACDO
- ACKNOWLEDGE
- ACL
- ACLS
- ACROBATIC FLIGHT
- ACROBATIC FLIGHT [ICAO]
- ACTIVE RUNWAY
- ACTUAL NAVIGATION PERFORMANCE (ANP)
- ADAPTED ROUTES
- ADAR
- ADDITIONAL SERVICES
- ADF
- ADIZ
- ADLY
- ADM
- ADMINISTRATOR
- ADR
- ADS [ICAO]
- ADS-B
- ADS-C
- ADVANCED AIR MOBILITY (AAM)
- ADVISE INTENTIONS
- ADVISORY
- ADVISORY CIRCULAR (AC)
- ADVISORY FREQUENCY
- ADVISORY SERVICE
- ADW
- AERIAL REFUELING
- AERODROME
- AERODROME BEACON [ICAO]
- AERODROME CONTROL SERVICE [ICAO]
- AERODROME CONTROL TOWER [ICAO]
- AERODROME ELEVATION [ICAO]
- AERODROME TRAFFIC CIRCUIT [ICAO]
- AERONAUTICAL BEACON
- AERONAUTICAL CHART
- AERONAUTICAL CHART [ICAO]
- Aeronautical Decision Making (ADM)
- AERONAUTICAL INFORMATION MANUAL (AIM)
- AERONAUTICAL INFORMATION PUBLICATION (AIP) [ICAO]
- AERONAUTICAL INFORMATION SERVICES (AIS)
- AFFIRMATIVE
- AFIS
- AFP
- AGL
- AHA
- AIM
- AIP [ICAO]
- AIR CARRIER DISTRICT OFFICE
- AIR DEFENSE EMERGENCY
- AIR DEFENSE IDENTIFICATION ZONE (ADIZ)
- AIR NAVIGATION FACILITY
- AIR ROUTE SURVEILLANCE RADAR
- AIR ROUTE TRAFFIC CONTROL CENTER (ARTCC)
- AIR TAXI
- AIR TRAFFIC
- AIR TRAFFIC [ICAO]
- AIR TRAFFIC CLEARANCE
- AIR TRAFFIC CONTROL
- AIR TRAFFIC CONTROL CLEARANCE [ICAO]
- 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
- AIRBORNE
- AIRBORNE DELAY
- AIRBORNE REROUTE (ABRR)
- AIRCRAFT
- AIRCRAFT [ICAO]
- AIRCRAFT APPROACH CATEGORY
- AIRCRAFT CLASSES
- AIRCRAFT CONFLICT
- AIRCRAFT HAZARD AREA (AHA)
- AIRCRAFT LIST (ACL)
- AIRCRAFT SURGE LAUNCH AND RECOVERY
- AIRCRAFT WAKE CATEGORIES
- AIRMEN’S METEOROLOGICAL INFORMATION (AIRMET)
- AIRMET
- AIRPLANE
- AIRPORT
- AIRPORT ADVISORY AREA
- AIRPORT ARRIVAL RATE (AAR)
- AIRPORT DEPARTURE RATE (ADR)
- AIRPORT ELEVATION
- AIRPORT LIGHTING
- AIRPORT MARKING AIDS
- AIRPORT REFERENCE POINT (ARP)
- AIRPORT RESERVATION OFFICE
- AIRPORT ROTATING BEACON
- AIRPORT SURFACE DETECTION EQUIPMENT (ASDE)
- AIRPORT SURVEILLANCE RADAR
- AIRPORT TAXI CHARTS
- AIRPORT TRAFFIC CONTROL SERVICE
- AIRPORT TRAFFIC CONTROL TOWER
- AIRSPACE CONFLICT
- AIRSPACE FLOW PROGRAM (AFP)
- AIRSPACE HIERARCHY
- AIRSPACE RESERVATION
- AIRSPEED
- AIRSTART
- AIRWAY
- AIRWAY [ICAO]
- AIRWAY BEACON
- AIS
- AIT
- ALERFA (Alert Phase) [ICAO]
- ALERT
- ALERT AREA
- ALERT NOTICE (ALNOT)
- ALERTING SERVICE
- ALNOT
- ALONG-TRACK DISTANCE (ATD)
- ALPHANUMERIC DISPLAY
- ALTERNATE AERODROME [ICAO]
- ALTERNATE AIRPORT
- ALTIMETER SETTING
- ALTITUDE
- ALTITUDE [ICAO]
- ALTITUDE READOUT
- ALTITUDE RESERVATION (ALTRV)
- ALTITUDE RESTRICTION
- ALTITUDE RESTRICTIONS ARE CANCELED
- ALTRV
- AMVER
- ANDS
- Angle of Attack
- AO1
- AO2
- APB
- APD
- APDIA
- APPROACH CLEARANCE
- APPROACH CONTROL FACILITY
- APPROACH CONTROL SERVICE
- APPROACH CONTROL SERVICE [ICAO]
- APPROACH GATE
- APPROACH LIGHT SYSTEM
- APPROACH RUNWAY VERIFICATION
- 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
- APRON
- APRON [ICAO]
- ARC
- AREA CONTROL CENTER [ICAO]
- AREA NAVIGATION (RNAV)
- AREA NAVIGATION (RNAV) APPROACH CONFIGURATION
- AREA NAVIGATION (RNAV) GLOBAL POSITIONING SYSTEM (GPS) PRECISION RUNWAY MONITORING (PRM) APPROACH
- ARMY AVIATION FLIGHT INFORMATION BULLETIN
- ARO
- ARRESTING SYSTEM
- ARRIVAL CENTER
- ARRIVAL DELAY
- ARRIVAL SECTOR (En Route)
- ARRIVAL TIME
- ARRIVAL/DEPARTURE WINDOW (ADW)
- ARROW
- ARSR
- ARTCC
- ASDA
- ASDA [ICAO]
- ASDE
- ASLAR
- ASOS
- ASR
- ASR APPROACH
- ASSOCIATED
- ATC
- ATC ADVISES
- ATC ASSIGNED AIRSPACE
- 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
- ATCAA
- ATCRBS
- ATCSCC
- ATCT
- ATD
- ATIS
- ATIS [ICAO]
- ATO
- ATOMATOFLAMES
- ATOMS 2 FLEA
- ATPA
- ATS ROUTE [ICAO]
- ATS SURVEILLANCE SERVICE [ICAO]
- ATS SURVEILLANCE SYSTEM [ICAO]
- ATTENTION ALL USERS PAGE (AAUP)
- AUTO
- AUTOLAND APPROACH
- AUTOMATED EMERGENCY DESCENT
- AUTOMATED INFORMATION TRANSFER (AIT)
- AUTOMATED MUTUAL‐ASSISTANCE VESSEL RESCUE SYSTEM
- AUTOMATED PROBLEM DETECTION (APD)
- AUTOMATED PROBLEM DETECTION BOUNDARY (APB)
- AUTOMATED PROBLEM DETECTION INHIBITED AREA (APDIA)
- AUTOMATED SERVICES
- AUTOMATED TERMINAL PROXIMITY ALERT (ATPA)
- AUTOMATED UNICOM
- AUTOMATED WEATHER SYSTEM
- AUTOMATIC ALTITUDE REPORT
- AUTOMATIC ALTITUDE REPORTING
- AUTOMATIC CARRIER LANDING SYSTEM
- 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 DIRECTION FINDER
- AUTOMATIC FLIGHT INFORMATION SERVICE (AFIS) – ALASKA FSSs ONLY
- AUTOMATIC TERMINAL INFORMATION SERVICE
- AUTOMATIC TERMINAL INFORMATION SERVICE [ICAO]
- Automation Management
- AUTOROTATION
- AVAILABLE LANDING DISTANCE (ALD)
- AVIATES
- AVIATION WATCH NOTIFICATION MESSAGE
- AVIATION WEATHER SERVICE
- AWOS
B
- B4UFLY
- BACK-TAXI
- BASE LEG
- BC
- BEACON
- BEARING
- BECMG
- BELOW MINIMUMS
- BEYOND VISUAL LINE OF SIGHT (BVLOS)
- BKN
- BL
- BLAST FENCE
- BLAST PAD
- BLIND SPEED
- BLIND SPOT
- BLIND TRANSMISSION
- BLIND VELOCITY [ICAO]
- BLIND ZONE
- BLOCKED
- BOTTOM ALTITUDE
- BOUNDARY LIGHTS
- BR
- BRAKING ACTION (GOOD, GOOD TO MEDIUM, MEDIUM, MEDIUM TO POOR, POOR, OR NIL)
- BRAKING ACTION ADVISORIES
- BREAKOUT
- BROADCAST
- BROADCAST [ICAO]
- BUFFER AREA
- BVLOS
C
- CALCULATED LANDING TIME
- CALIBRATED AIRSPEED (CAS)
- CALL FOR RELEASE
- CALL UP
- CARDINAL ALTITUDES
- CAVOK
- CEILING
- CEILING [ICAO]
- CENTER WEATHER ADVISORY
- CERTIFICATE OF WAIVER OR AUTHORIZATION (COA)
- CHAFF
- CHART SUPPLEMENT
- CHARTED VFR FLYWAYS
- CHARTED VISUAL FLIGHT PROCEDURE APPROACH
- CHOP
- CIG
- CIRCLE TO RUNWAY (RUNWAY NUMBER)
- CIRCLE-TO-LAND MANEUVER
- CLASS G AIRSPACE
- CLEAR AIR TURBULENCE (CAT)
- CLEAR OF THE RUNWAY
- CLEARANCE LIMIT
- CLEARANCE VOID IF NOT OFF BY (TIME)
- CLEARED (Type of) APPROACH
- CLEARED APPROACH
- CLEARED AS FILED
- CLEARED FOR TAKEOFF
- CLEARED FOR THE OPTION
- CLEARED THROUGH
- CLEARED TO LAND
- CLEARWAY
- CLIMB TO VFR
- CLIMB VIA
- CLIMBOUT
- CLOSED RUNWAY
- CLOSED TRAFFIC
- CLOUD
- CLR
- CLUTTER
- COASTAL FIX
- CODES
- COLD TEMPERATURE CORRECTION
- COMMON POINT
- COMMON TRAFFIC ADVISORY FREQUENCY (CTAF)
- COMPASS LOCATOR
- COMPASS ROSE
- COMPOSITE FLIGHT PLAN
- COMPULSORY REPORTING POINTS
- COMPUTER NAVIGATION FIX (CNF)
- CONFIDENCE MANEUVER
- CONFLICT ALERT
- CONTACT
- CONTACT APPROACH
- CONTAMINATED RUNWAY
- CONTERMINOUS U.S.
- CONTINENTAL UNITED STATES
- CONTROL AREA [ICAO]
- CONTROL SECTOR
- CONTROLLED AIRSPACE
- Controlled Flight Into Terrain (CFIT)
- CONTROLLER PILOT DATA LINK COMMUNICATIONS (CPDLC)
- CONVECTIVE SIGMET
- COOPERATIVE SURVEILLANCE
- COORDINATES
- COR
- COUPLED APPROACH
- COURSE
- Crew Resource Management (CRM)
- CREWMEMBER (UAS)
- CRITICAL ENGINE
- CROSS (FIX) AT (ALTITUDE)
- CROSS (FIX) AT OR ABOVE (ALTITUDE)
- CROSS (FIX) AT OR BELOW (ALTITUDE)
- CROSSWIND
- CROSSWIND COMPONENT
- CRUISE
- CRUISE CLIMB
- CRUISING ALTITUDE
- CTAF
D
- DA / DH
- DANGER AREA [ICAO]
- DEAD RECKONING
- DEBRIS RESPONSE AREA (DRA)
- DECIDE
- DECISION ALTITUDE (DA)
- DECISION ALTITUDE/DECISION HEIGHT [ICAO Annex 6]
- DECISION HEIGHT (DH)
- DECODER
- DEFENSE AREA
- DEFENSE VISUAL FLIGHT RULES
- DELAY INDEFINITE (REASON IF KNOWN) EXPECT FURTHER CLEARANCE (TIME)
- Density Altitude
- DEPARTURE CONTROL
- DEPARTURE TIME
- DESCEND VIA
- DESIGNATED COMMON TRAFFIC ADVISORY FREQUENCY (CTAF) AREA
- DESIRED TRACK
- DETRESFA (DISTRESS PHASE) [ICAO]
- DEVIATION
- DIE
- DIGITAL-AUTOMATIC TERMINAL INFORMATION SERVICE (D-ATIS)
- DIRECT
- DIRECTLY BEHIND
- DISCRETE CODE
- DISCRETE FREQUENCY
- DISPLACED THRESHOLD
- DISTANCE MEASURING EQUIPMENT (DME)
- DISTRESS
- DIVERSE VECTOR AREA
- DIVERSION (DVRSN)
- DME
- DME FIX
- DME SEPARATION
- DoD FLIP
- Domains of Learning
- DOMESTIC AIRSPACE
- DOMESTIC NOTICE
- DOWNBURST
- DOWNLINK
- DR
- DRAG CHUTE
- DROP ZONE
- DS
- DU
- DUE REGARD
- DVFR FLIGHT PLAN
- DZ
E
- E-MSAW
- EAS
- EDCT
- EDST
- EFC
- ELIGIBILITY
- ELT
- EMBEDDED ROUTE TEXT
- EMERGENCY
- EMERGENCY AUTOLAND SYSTEM
- EMERGENCY DESCENT MODE
- EMERGENCY LOCATOR TRANSMITTER (ELT)
- EN ROUTE AIR TRAFFIC CONTROL SERVICES
- EN ROUTE AUTOMATION SYSTEM (EAS)
- EN ROUTE CHARTS
- EN ROUTE DECISION SUPPORT TOOL (EDST)
- EN ROUTE DESCENT
- EN ROUTE HIGH ALTITUDE CHARTS
- EN ROUTE LOW ALTITUDE CHARTS
- EN ROUTE MINIMUM SAFE ALTITUDE WARNING (E-MSAW)
- EN ROUTE TRANSITION
- ENHANCED FLIGHT VISION SYSTEM (EFVS)
- ENHANCED SPECIAL REPORTING SERVICE (eSRS)
- eSRS
- EST
- ESTABLISHED
- ESTABLISHED ON RNP (EoR) CONCEPT
- ESTIMATED (EST)
- ESTIMATED ELAPSED TIME [ICAO]
- ESTIMATED OFF-BLOCK TIME [ICAO]
- ESTIMATED POSITION ERROR (EPE)
- ESTIMATED TIME EN ROUTE
- ESTIMATED TIME OF ARRIVAL
- ETA
- ETE
- EXECUTE MISSED APPROACH
- EXPECT (ALTITUDE) AT (TIME) or (FIX)
- EXPECT DEPARTURE CLEARANCE TIME (EDCT)
- EXPECT FURTHER CLEARANCE (TIME)
- EXPECT FURTHER CLEARANCE VIA (AIRWAYS, ROUTES OR FIXES)
- EXPEDITE
F
- FAA-RECOGNIZED IDENTIFICATION AREA (FRIA)
- FAF
- FALLEN HERO
- FAWP
- FC
- FEATHERED PROPELLER
- FEDERAL AIRWAYS
- FEEDER FIX
- FEEDER ROUTE
- FERRY FLIGHT
- FEW
- FG
- FIELD ELEVATION
- FILED
- FILED EN ROUTE DELAY
- FILED FLIGHT PLAN
- FINAL
- FINAL APPROACH [ICAO]
- FINAL APPROACH COURSE
- FINAL APPROACH FIX
- FINAL APPROACH POINT
- FINAL APPROACH SEGMENT
- FINAL APPROACH SEGMENT [ICAO]
- FINAL APPROACH-IFR
- FINAL CONTROLLER
- FINAL GUARD SERVICE
- FINAL MONITOR AID
- FINAL MONITOR CONTROLLER
- FIR
- FIRST PERSON VIEW
- FIRST TIER CENTER
- FIS-B
- Five C’s
- Five Hazardous Attitudes
- FIX
- FIX BALANCING
- FLAG
- FLAG ALARM
- FLAMEOUT
- FLAMEOUT PATTERN
- FLAPS
- FLIGHT CHECK
- FLIGHT DATA [FSS]
- FLIGHT FOLLOWING
- FLIGHT INFORMATION REGION
- FLIGHT INFORMATION SERVICE
- FLIGHT INFORMATION SERVICE-BROADCAST (FIS-B)
- FLIGHT INSPECTION
- FLIGHT LEVEL
- FLIGHT LEVEL [ICAO]
- FLIGHT LINE
- FLIGHT MANAGEMENT SYSTEMS
- FLIGHT PATH
- FLIGHT PLAN
- FLIGHT PLAN AREA (FPA)
- FLIGHT RECORDER
- FLIGHT SERVICE STATION (FSS)
- FLIGHT STANDARDS DISTRICT OFFICE
- FLIGHT TERMINATION
- FLIGHT TEST
- FLIGHT VISIBILITY
- FLIP
- FLY HEADING (DEGREES)
- FLY VISUAL TO AIRPORT
- FLY-BY WAYPOINT
- FLY-OVER WAYPOINT
- FLYAWAY
- FM
- FMA
- FMS
- FORMATION FLIGHT
- FRC
- FRIA
- FRICTION MEASUREMENT
- FROPA
- FSDO
- FSS
- FU
- FUEL DUMPING
- FUEL REMAINING
- FUEL SIPHONING
- FUEL VENTING
- Fundamentals of Instruction
- FZ
- FZRANO
G
- G
- GATE HOLD PROCEDURES
- GCA
- GDP
- GENERAL AVIATION
- GENERAL AVIATION [ICAO]
- GEO MAP
- Get-There-Itis
- GLIDEPATH
- GLIDEPATH [ICAO]
- GLIDESLOPE
- GLIDESLOPE INTERCEPT ALTITUDE
- GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS)
- GLOBAL NAVIGATION SATELLITE SYSTEM MINIMUM EN ROUTE IFR ALTITUDE (GNSS MEA)
- GLOBAL POSITIONING SYSTEM (GPS)
- GNSS MEA
- GO AHEAD
- GO AROUND
- GPD
- GPS
- GR
- GRABCARD
- GRAPHIC PLAN DISPLAY (GPD)
- GRAPHICAL AIRMEN’S METEOROLOGICAL INFORMATION
- GROSS NAVIGATION ERROR (GNE)
- GROUND BASED AUGMENTATION SYSTEM (GBAS)
- GROUND BASED AUGMENTATION SYSTEM (GBAS) LANDING SYSTEM (GLS)
- GROUND CLUTTER
- GROUND COMMUNICATION OUTLET (GCO)
- GROUND CONTROLLED APPROACH
- GROUND DELAY PROGRAM (GDP)
- GROUND SPEED
- GROUND STOP (GS)
- GROUND VISIBILITY
- GS
H
- HAA
- HAL
- HANDOFF
- HAT
- HAVE NUMBERS
- Hazardous Attitudes
- HAZARDOUS MATERIALS (HAZMAT)
- HAZARDOUS WEATHER INFORMATION
- HAZMAT
- HEAVY (AIRCRAFT)
- Heavy intensity (METAR)
- HEIGHT ABOVE AIRPORT (HAA)
- HEIGHT ABOVE LANDING (HAL)
- HEIGHT ABOVE TOUCHDOWN (HAT)
- HELICOPTER
- HELIPAD
- HELIPORT
- HELIPORT REFERENCE POINT (HRP)
- HERTZ
- HF
- HF COMMUNICATIONS
- HIGH FREQUENCY
- HIGH FREQUENCY COMMUNICATIONS
- HIGH SPEED EXIT
- HIGH SPEED TAXIWAY
- HIGH SPEED TURNOFF
- HIGH UPDATE RATE SURVEILLANCE
- HOLD FOR RELEASE
- HOLD PROCEDURE
- HOLD-IN-LIEU OF PROCEDURE TURN
- HOLD-SHORT POINT
- HOLD-SHORT POSITION LIGHTS
- HOLD-SHORT POSITION MARKING
- HOLD-SHORT POSITION SIGNS
- HOLDING FIX
- HOLDING POINT [ICAO]
- HOLDING PROCEDURE
- HOMING
- HOMING [ICAO]
- HOT SPOT
- HOVER CHECK
- HOVER TAXI
- HOW DO YOU HEAR ME?
- Hypoxia
- HZ
I
- I SAY AGAIN
- I’M SAFE
- IAF
- IAP
- IAWP
- IC
- ICAO Three-Letter Designator (3LD)
- ICING
- IDENT
- IDENT FEATURE
- IDENTIFICATION [ICAO]
- Identifying the Critical Engine
- IF
- IF NO TRANSMISSION RECEIVED FOR (TIME)
- IF/IAWP
- IFR
- IFR AIRCRAFT
- IFR CONDITIONS
- IFR MILITARY TRAINING ROUTES (IR)
- IFR TAKEOFF MINIMUMS AND DEPARTURE PROCEDURES
- IFWP
- ILS
- ILS CATEGORIES
- IM
- IMC
- IMMEDIATELY
- IMSAFE
- INCERFA (Uncertainty Phase) [ICAO]
- INCREASED SEPARATION REQUIRED (ISR)
- INERTIAL NAVIGATION SYSTEM (INS)
- INFLIGHT REFUELING
- INFLIGHT SERVICES [FSS]
- INFLIGHT WEATHER ADVISORY
- INFORMATION REQUEST (INREQ)
- INITIAL APPROACH FIX (IAF)
- INITIAL APPROACH SEGMENT
- INITIAL APPROACH SEGMENT [ICAO]
- INLAND NAVIGATION FACILITY
- INNER MARKER
- INREQ
- INS
- INSTRUMENT APPROACH
- INSTRUMENT APPROACH PROCEDURE
- INSTRUMENT APPROACH PROCEDURE [ICAO]
- Instrument Currency
- INSTRUMENT DEPARTURE PROCEDURE (DP)
- INSTRUMENT FLIGHT RULES (IFR)
- INSTRUMENT FLIGHT RULES [ICAO]
- INSTRUMENT LANDING SYSTEM (ILS)
- INSTRUMENT METEOROLOGICAL CONDITIONS (IMC)
- INSTRUMENT RUNWAY
- INTEGRITY
- INTERMEDIATE APPROACH SEGMENT
- INTERMEDIATE APPROACH SEGMENT [ICAO]
- INTERMEDIATE FIX
- INTERNATIONAL AIRPORT
- INTERNATIONAL CIVIL AVIATION ORGANIZATION [ICAO]
- INTERNATIONAL NOTICE
- INTERROGATOR
- INTERSECTING RUNWAYS
- INTERSECTION
- INTERSECTION DEPARTURE
- INTERSECTION TAKEOFF
- IR
- IRREGULAR SURFACE
- ISR
J
K
L
- LAA
- LAANC
- LAHSO
- LAND AND HOLD SHORT OPERATIONS
- LAND-BASED AIR DEFENSE IDENTIFICATION ZONE (ADIZ)
- LANDING AREA
- LANDING AREA [ICAO]
- LANDING DIRECTION INDICATOR
- LANDING DISTANCE AVAILABLE (LDA)
- LANDING DISTANCE AVAILABLE [ICAO]
- LANDING MINIMUMS
- LANDING ROLL
- LANDING SEQUENCE
- LAST ASSIGNED ALTITUDE
- LATERAL NAVIGATION (LNAV)
- LATERAL SEPARATION
- Laws of Learning
- LDA
- Levels of Learning
- LF
- LIGHT GUN
- Light intensity (METAR)
- LIGHT-SPORT AIRCRAFT (LSA)
- LIGHTED AIRPORT
- LINE UP AND WAIT (LUAW)
- Load Factor
- LOCAL AIRPORT ADVISORY (LAA)
- LOCAL TRAFFIC
- LOCALIZER
- LOCALIZER COURSE [ICAO]
- LOCALIZER OFFSET
- LOCALIZER PERFORMANCE WITH VERTICAL GUIDANCE (LPV)
- LOCALIZER TYPE DIRECTIONAL AID (LDA)
- LOCALIZER USABLE DISTANCE
- LOCATOR [ICAO]
- LONGITUDINAL SEPARATION
- LORAN
- LOST 5 C’s
- LOST COMMUNICATIONS
- Lost Engine Checklist (Multi-Engine)
- LOST LINK (LL)
- LOST LINK PROCEDURE
- LOW ALTITUDE AIRWAY STRUCTURE
- LOW ALTITUDE AUTHORIZATION AND NOTIFICATION CAPABILITY (LAANC)
- LOW APPROACH
- LOW FREQUENCY (LF)
- LPV
- LUAW
M
- M (temperature)
- MAA
- MACH NUMBER
- MACH TECHNIQUE [ICAO]
- MAHWP
- MAINTAIN
- MAKE SHORT APPROACH
- MAN PORTABLE AIR DEFENSE SYSTEMS (MANPADS)
- MANDATORY ALTITUDE
- MANPADS
- MAP
- MARKER BEACON
- MARSA
- MARVELOUS VFR C500
- MAWP
- MAXIMUM AUTHORIZED ALTITUDE
- MAXIMUM GROSS OPERATING WEIGHT (MGOW)
- MAYDAY
- MCA
- MDA
- MEA
- MEL
- METAR
- METEOROLOGICAL IMPACT STATEMENT
- METERING
- METERING FIX
- MGOW
- MHA
- MI
- MIA
- MICROBURST
- MID RVR
- MIDDLE COMPASS LOCATOR
- MIDDLE MARKER
- MILES-IN-TRAIL
- MILITARY AUTHORITY ASSUMES RESPONSIBILITY FOR SEPARATION OF AIRCRAFT (MARSA)
- MILITARY LANDING ZONE
- MILITARY OPERATIONS AREA
- MILITARY TRAINING ROUTES
- MINIMA
- MINIMUM CROSSING ALTITUDE (MCA)
- MINIMUM DESCENT ALTITUDE (MDA)
- MINIMUM EN ROUTE IFR ALTITUDE (MEA)
- MINIMUM FUEL
- MINIMUM HOLDING ALTITUDE
- MINIMUM IFR ALTITUDES (MIA)
- MINIMUM OBSTRUCTION CLEARANCE ALTITUDE (MOCA)
- MINIMUM RECEPTION ALTITUDE (MRA)
- MINIMUM SAFE ALTITUDE (MSA)
- MINIMUM SAFE ALTITUDE WARNING (MSAW)
- MINIMUM SECTOR ALTITUDE [ICAO]
- MINIMUM VECTORING ALTITUDE (MVA)
- MINIMUMS
- MINUTES-IN-TRAIL
- MIS
- MISSED APPROACH
- MISSED APPROACH POINT (MAP)
- MISSED APPROACH PROCEDURE [ICAO]
- MISSED APPROACH SEGMENT
- MM
- MOA
- MOCA
- MODE
- MODE C INTRUDER ALERT
- MODEL AIRCRAFT
- Moderate intensity (METAR)
- MONITOR
- MOUNTAIN WAVE
- MOVEMENT AREA
- MOVEMENT AREA [ICAO]
- MOVING TARGET INDICATOR
- MRA
- MSA
- MSAW
- MSL
- MTI
- MTR
- MULTICOM
- MULTIPLE RUNWAYS
- MVA
N
- NAS
- NAT HLA
- NATIONAL AIRSPACE SYSTEM
- NATIONAL BEACON CODE ALLOCATION PLAN AIRSPACE (NBCAP)
- NATIONAL FLIGHT DATA DIGEST (NFDD)
- NATIONAL SEARCH AND RESCUE PLAN
- NATIONAL SECURITY AREA (NSA)
- NAVAID
- NAVAID CLASSES
- NAVIGABLE AIRSPACE
- NAVIGATION REFERENCE SYSTEM (NRS)
- NAVIGATION SPECIFICATION [ICAO]
- NAVIGATIONAL AID
- NBCAP AIRSPACE
- NDB
- NEGATIVE
- NEGATIVE CONTACT
- NFDD
- Night
- NIGHT [ICAO]
- NO GYRO APPROACH
- NO GYRO VECTOR
- NO TRANSGRESSION ZONE (NTZ)
- NON-COOPERATIVE SURVEILLANCE
- NON-RESTRICTIVE ROUTING (NRR)
- NONAPPROACH CONTROL TOWER
- NONDIRECTIONAL BEACON
- NONMOVEMENT AREAS
- NONPRECISION APPROACH PROCEDURE
- NONRADAR
- NORDO (No Radio)
- NORMAL OPERATING ZONE (NOZ)
- NORTH AMERICAN ROUTE
- NORTH ATLANTIC HIGH LEVEL AIRSPACE (NAT HLA)
- NOSIG
- NOT STANDARD
- NOTAM [ICAO]
- NOTAMs
- NOTICE TO AIRMEN (NOTAM)
- NRR
- NRS
- NSW
- NUMEROUS TARGETS VICINITY (LOCATION)
- NWKRAFT
O
- OBSTACLE
- OBSTACLE DEPARTURE PROCEDURE (ODP)
- OBSTACLE FREE ZONE
- OBSTRUCTION
- OBSTRUCTION LIGHT
- OCEANIC AIRSPACE
- OCEANIC PUBLISHED ROUTE
- OCEANIC TRANSITION ROUTE
- ODP
- OFF COURSE
- OFF-ROUTE OBSTRUCTION CLEARANCE ALTITUDE (OROCA)
- OFF-ROUTE VECTOR
- OFFSET PARALLEL RUNWAYS
- OFFSHORE/CONTROL AIRSPACE AREA
- OM
- ON COURSE
- ON-COURSE INDICATION
- ONE-MINUTE WEATHER
- OPEN LOOP CLEARANCE
- OPERATIONS OVER PEOPLE (OOP)
- OPERATOR (UAS)
- OPPOSITE DIRECTION AIRCRAFT
- OPTION APPROACH
- ORGANIZED TRACK SYSTEM
- OTR
- OTS
- OUT
- OUT OF SERVICE/UNSERVICEABLE (U/S)
- OUTER AREA (associated with Class C airspace)
- OUTER COMPASS LOCATOR
- OUTER FIX
- OUTER MARKER
- OVC
- OVER
- OVERHEAD MANEUVER
- OVERLYING CENTER
P
- P TIME
- P-ACP
- PAN-PAN
- PAO
- PAPI
- PAR
- PARALLEL ILS APPROACHES
- PARALLEL OFFSET ROUTE
- PARALLEL RUNWAYS
- Passenger Currency
- PAVE
- PBCT
- PBN
- PDC
- PDRR
- PERFORMANCE-BASED NAVIGATION (PBN) [ICAO]
- PERMANENT ECHO
- Personal Minimums
- PHOTO RECONNAISSANCE
- PILOT BRIEFING
- PILOT IN COMMAND
- PILOT WEATHER REPORT
- PILOT’S DISCRETION
- PIREP
- PIREPs
- PK WND
- PL
- PNO
- PO
- POINT OUT
- POINT-TO-POINT (PTP)
- POLAR TRACK STRUCTURE
- POSITION REPORT
- POSITION SYMBOL
- POSITIVE CONTROL
- POWERED-LIFT
- PR
- PRACTICE INSTRUMENT APPROACH
- PRE-DEPARTURE CLEARANCE
- PREARRANGED COORDINATION
- PRECIPITATION
- PRECISION APPROACH
- PRECISION APPROACH PROCEDURE
- PRECISION APPROACH RADAR
- PRECISION APPROACH RADAR [ICAO]
- PRECISION OBSTACLE FREE ZONE (POFZ)
- PRECISION RUNWAY MONITOR (PRM) SYSTEM
- PREDICTIVE WIND SHEAR ALERT SYSTEM (PWS)
- PREFERRED IFR ROUTES
- PRESFR
- PRESRR
- PREVAILING VISIBILITY
- PRIMARY RADAR TARGET
- PRIOR PERMISSION REQUIRED (PPR)
- PRM APPROACH
- PROB30
- PROB40
- PROCEDURAL CONTROL [ICAO]
- PROCEDURAL SEPARATION [ICAO]
- PROCEDURE TURN
- PROCEDURE TURN [ICAO]
- PROCEDURE TURN INBOUND
- PROFILE DESCENT
- PROGRESS REPORT
- PROGRESSIVE TAXI
- PROHIBITED AREA
- PROHIBITED AREA [ICAO]
- PROMINENT OBSTACLE
- PROPELLER (PROP) WASH (PROP BLAST)
- PROPOSED BOUNDARY CROSSING TIME
- PROPOSED DEPARTURE TIME
- PROTECTED AIRSPACE
- PT
- PTP
- PTS
- PUBLIC AIRCRAFT OPERATION (PAO)
- PUBLISHED INSTRUMENT APPROACH PROCEDURE VISUAL SEGMENT
- PUBLISHED ROUTE
- PWINO
- PWS
- PY
Q
R
- RA
- RAB / RAE
- RADAR
- RADAR ADVISORY
- RADAR APPROACH
- RADAR APPROACH CONTROL FACILITY
- RADAR ARRIVAL
- RADAR CONTACT
- RADAR CONTACT LOST
- RADAR ENVIRONMENT
- RADAR FLIGHT FOLLOWING
- RADAR IDENTIFICATION
- RADAR IDENTIFIED AIRCRAFT
- RADAR POINT OUT
- RADAR REQUIRED
- RADAR ROUTE
- RADAR SERVICE
- RADAR SERVICE TERMINATED
- RADAR SURVEILLANCE
- RADAR TRAFFIC ADVISORIES
- RADIAL
- RADIO
- RADIO ALTIMETER
- RADIO MAGNETIC INDICATOR (RMI)
- RADIO-CONTROLLED (RC)
- RAIM
- RANDOM ALTITUDE
- RANDOM ROUTE
- READ BACK
- RECEIVER AUTONOMOUS INTEGRITY MONITORING (RAIM)
- RECEIVING CONTROLLER
- RECONFORMANCE
- RECREATIONAL FLYER
- REDUCED VERTICAL SEPARATION MINIMUM (RVSM) AIRSPACE
- REFINED HAZARD AREA (RHA)
- REIL
- RELEASE TIME
- REMOTE AIRPORT INFORMATION SERVICE (RAIS)
- REMOTE CENTER AIR/GROUND FACILITY (RCAG)
- REMOTE COMMUNICATIONS OUTLET (RCO)
- REMOTE IDENTIFICATION (RID)
- REMOTE PILOT
- REMOTE PILOT IN COMMAND (RPIC)
- REPORT
- REPORTING POINT
- REQUEST FULL ROUTE CLEARANCE
- REQUIRED NAVIGATION PERFORMANCE (RNP)
- REROUTE IMPACT ASSESSMENT (RRIA)
- RESCUE COORDINATION CENTER (RCC)
- RESOLUTION ADVISORY
- RESUME NORMAL SPEED
- RESUME OWN NAVIGATION
- RESUME PUBLISHED SPEED
- Risk Management
- RMK
- RNAV
- RNAV APPROACH
- RNAV VISUAL FLIGHT PROCEDURE (RVFP)
- ROAD RECONNAISSANCE (RC)
- ROGER
- ROTOR WASH
- ROTORCRAFT
- ROUND-ROBIN FLIGHT PLAN
- ROUTE
- ROUTE ACTION NOTIFICATION
- ROUTE AMENDMENT DIALOG (RAD)
- ROUTE SEGMENT
- RUNWAY
- RUNWAY CONDITION CODES (RwyCC)
- RUNWAY CONDITION READING (RCR)
- RUNWAY CONDITION REPORT (RwyCR)
- RUNWAY ENTRANCE LIGHTS (REL)
- RUNWAY GRADIENT
- RUNWAY HEADING
- RUNWAY IN USE/ACTIVE RUNWAY/DUTY RUNWAY
- RUNWAY OVERRUN
- RUNWAY PROFILE DESCENT
- RUNWAY SAFETY AREA (RSA)
- RUNWAY STATUS LIGHTS (RWSL) SYSTEM
- RUNWAY USE PROGRAM
- RVR
S
- SA
- SAFETY ALERT
- SAFETY LOGIC SYSTEM
- SAIL BACK
- SAME DIRECTION AIRCRAFT
- SATELLITE-BASED AUGMENTATION SYSTEM (SBAS)
- SAY AGAIN
- SAY ALTITUDE
- SAY HEADING
- SCHEDULED TIME OF ARRIVAL (STA)
- SCT
- SEA LANE
- SEARCH AND RESCUE
- SEARCH AND RESCUE FACILITY
- SECONDARY RADAR TARGET
- SECTOR LIST DROP INTERVAL
- SECURITY NOTICE (SECNOT)
- SECURITY SERVICES AIRSPACE
- SEE AND AVOID
- SEGMENTED CIRCLE
- SEGMENTS OF A SID/STAR
- SEGMENTS OF AN INSTRUMENT APPROACH PROCEDURE
- SELF-BRIEFING
- SENSE AND AVOID (SAA)
- SEPARATION
- SEPARATION MINIMA
- SERVICE
- SEVERE WEATHER AVOIDANCE PLAN (SWAP)
- SEVERE WEATHER FORECAST ALERTS
- SG
- SH
- SIGMET
- SIGNIFICANT POINT
- SIMULATED FLAMEOUT
- SIMULTANEOUS (CONVERGING) DEPENDENT APPROACHES
- SIMULTANEOUS (CONVERGING) INDEPENDENT APPROACHES
- SIMULTANEOUS (PARALLEL) DEPENDENT APPROACHES
- SIMULTANEOUS CLOSE PARALLEL APPROACHES
- SIMULTANEOUS ILS APPROACHES
- SIMULTANEOUS OFFSET INSTRUMENT APPROACH (SOIA)
- SINGLE DIRECTION ROUTES
- SINGLE FREQUENCY APPROACH
- Single-Pilot Resource Management (SRM)
- SINGLE-PILOTED AIRCRAFT
- Situational Awareness
- SKC
- SKYSPOTTER
- SLASH
- SLOW TAXI
- SLP
- SMACFUM
- SMALL UNMANNED AIRCRAFT SYSTEM (sUAS)
- SN
- SPACE LAUNCH AND REENTRY AREA
- SPACE-BASED ADS-B (SBA)
- Spatial Disorientation
- SPEAK SLOWER
- SPECI
- SPECIAL ACTIVITY AIRSPACE (SAA)
- SPECIAL AIR TRAFFIC RULES (SATR)
- SPECIAL EMERGENCY
- SPECIAL FLIGHT RULES AREA (SFRA)
- SPECIAL GOVERNMENT INTEREST (SGI)
- SPECIAL MILITARY ACTIVITY ROUTE (SMAR)
- Special Use Airspace
- Special VFR
- SPECIAL VFR CONDITIONS
- SPECIAL VFR OPERATIONS
- SPECIALIST-PROVIDED SERVICES
- SPEED ADJUSTMENT
- SPEED ADVISORY
- SPEED BRAKES
- SPEED SEGMENTS
- SPOOFING
- SQ
- SQUAWK (Mode, Code, Function)
- SS
- STAGING/QUEUING
- STAND BY
- STANDARD INSTRUMENT DEPARTURE (SID)
- STANDARD RATE TURN
- STANDARD TERMINAL ARRIVAL (STAR)
- STATE AIRCRAFT
- STATIC RESTRICTIONS
- STATIONARY ALTITUDE RESERVATION (STATIONARY ALTRV)
- STEP TAXI
- STEP TURN
- STEPDOWN FIX
- STEREO ROUTE
- Sterile Cockpit
- STOP ALTITUDE SQUAWK
- STOP AND GO
- STOP SQUAWK (Mode or Code)
- STOPOVER FLIGHT PLAN
- STOPWAY
- STRAIGHT-IN APPROACH IFR
- STRAIGHT-IN APPROACH VFR
- STRAIGHT-IN LANDING
- STRATEGIC PLANNING
- SUBSTITUTE ROUTE
- SUNSET AND SUNRISE
- SUPPLEMENTAL WEATHER SERVICE LOCATION
- SUPPS
- SURFACE AREA
- SURFACE METERING PROGRAM
- SURFACE VIEWER
- SURPIC
- SURVEILLANCE APPROACH
- SURVEILLANCE ENHANCED SEARCH AND RESCUE (SE SAR)
- SUSPICIOUS UAS
- SYSTEM STRATEGIC NAVIGATION
T
- T group
- TACAN-ONLY AIRCRAFT
- TACTICAL AIR NAVIGATION (TACAN)
- TAF
- TAILWIND
- TAKEOFF DISTANCE AVAILABLE (TODA)
- TAKEOFF HOLD LIGHTS (THL)
- TAKEOFF ROLL
- TAKEOFF RUN AVAILABLE (TORA)
- TARGET
- TARGET RESOLUTION
- TARMAC DELAY
- TARMAC DELAY AIRCRAFT
- TARMAC DELAY REQUEST
- Task Management
- TAXI
- TAXI PATTERNS
- TCAS
- TEMPO
- TEMPORARY FLIGHT RESTRICTION (TFR)
- TERMINAL AREA
- TERMINAL AREA FACILITY
- TERMINAL AUTOMATION SYSTEMS (TAS)
- TERMINAL DATA LINK SYSTEM (TDLS)
- TERMINAL FLIGHT DATA MANAGER (TFDM)
- TERMINAL RADAR SERVICE AREA (TRSA)
- TERMINAL VFR RADAR SERVICE
- TERMINAL-VERY HIGH FREQUENCY OMNIDIRECTIONAL RANGE STATION (TVOR)
- TERRAIN AWARENESS WARNING SYSTEM (TAWS)
- TERRAIN FOLLOWING
- TETRAHEDRON
- TFR
- TFRs
- THAT IS CORRECT
- The 5P Check
- THE RECREATIONAL UAS SAFETY TEST (TRUST)
- THREE-HOUR TARMAC RULE
- THRESHOLD
- THRESHOLD CROSSING HEIGHT (TCH)
- TIE-IN FACILITY
- TIME GROUP
- TIME-BASED FLOW MANAGEMENT (TBFM)
- TIME-BASED MANAGEMENT (TBM)
- TIS-B
- TOMATO FLAMES
- TOMATO FLAMES / Inoperative Equipment
- TOP ALTITUDE
- TOP OF DESCENT (TOD)
- TORCHING
- TOUCH-AND-GO
- TOUCHDOWN
- TOUCHDOWN ZONE
- TOUCHDOWN ZONE ELEVATION (TDZE)
- TOWER
- TOWER EN ROUTE CONTROL SERVICE
- TRACEABLE PRESSURE STANDARD
- TRACK
- TRACK OF INTEREST (TOI)
- TRAFFIC
- TRAFFIC ADVISORIES
- TRAFFIC ALERT AND COLLISION AVOIDANCE SYSTEM (TCAS)
- TRAFFIC IN SIGHT
- TRAFFIC INFORMATION SERVICE-BROADCAST (TIS-B)
- TRAFFIC MANAGEMENT INITIATIVE (TMI)
- TRAFFIC MANAGEMENT PROGRAM ALERT
- TRAFFIC MANAGEMENT UNIT
- TRAFFIC NO FACTOR
- TRAFFIC NO LONGER OBSERVED
- TRAFFIC PATTERN
- TRAFFIC SITUATION DISPLAY (TSD)
- TRAJECTORY
- TRAJECTORY ALTERING CLEARANCE (TAC)
- TRAJECTORY OPTIONS SET (TOS)
- TRAJECTORY-BASED OPERATIONS (TBO)
- TRANSFER OF COMMUNICATION (TOC)
- TRANSFER OF CONTROL
- TRANSFERRING CONTROLLER
- TRANSITION
- TRANSITION POINT
- TRANSITIONAL AIRSPACE
- TRANSITIONAL HAZARD AREA (THA)
- TRANSMISSOMETER
- TRANSMITTING IN THE BLIND
- TRANSPONDER
- TRANSPONDER OBSERVED
- TRIAL PLAN
- TRSA
- TS
- TSNO
- TURBOJET AIRCRAFT
- TURBOPROP AIRCRAFT
- TURBULENCE
- Types of Endorsements
U
- UAS FACILITY MAP (UASFM)
- UAS TEST SITE
- UAS TRAFFIC MANAGEMENT (UTM)
- ULTRAHIGH FREQUENCY (UHF)
- ULTRALIGHT VEHICLE
- UNABLE
- UNASSOCIATED
- UNCONTROLLED AIRSPACE
- UNDER THE HOOD
- UNFROZEN
- UNICOM
- UNIDENTIFIED ANOMALOUS PHENOMENA (UAP)
- UNMANNED AIRCRAFT (UA)
- UNMANNED AIRCRAFT SYSTEM (UAS)
- UNOS
- UNPUBLISHED ROUTE
- UNRELIABLE (GPS/WAAS)
- UP
- UPLINK
- URBAN AIR MOBILITY (UAM)
- URGENCY
V
- VA
- VASI
- VC
- VECTOR
- VERIFY
- VERIFY SPECIFIC DIRECTION OF TAKEOFF (OR TURNS AFTER TAKEOFF)
- VERTICAL NAVIGATION (VNAV)
- VERTICAL SEPARATION
- VERTICAL TAKEOFF AND LANDING AIRCRAFT (VTOL)
- VERTIPAD
- VERTIPORT
- VERY HIGH FREQUENCY (VHF)
- VERY LOW FREQUENCY (VLF)
- VFR AIRCRAFT
- VFR Cloud Clearance
- VFR CONDITIONS
- VFR Cross Country
- VFR MILITARY TRAINING ROUTES (VR)
- VFR NOT RECOMMENDED
- VFR-ON-TOP
- VIDEO MAP
- VIRGA
- VISIBILITY
- Visibility/Cloud Clearance Requirements
- VISUAL APPROACH
- VISUAL CLIMB OVER AIRPORT (VCOA)
- VISUAL DESCENT POINT (VDP)
- VISUAL FLIGHT RULES (VFR)
- VISUAL HOLDING
- VISUAL LINE OF SIGHT (VLOS)
- VISUAL METEOROLOGICAL CONDITIONS (VMC)
- VISUAL OBSERVER (VO)
- VISUAL SEPARATION
- VNE / VNO / VA / VFE / VSO
- VOICE SWITCHING AND CONTROL SYSTEM (VSCS)
- VOR
- VORTAC
- VORTICES
- VOT
- VRB
- VV
- VX / VY