top of page

Free Aviation Abbreviations Lesson

Updated: Aug 11, 2021

Aviation Abbreviations Lesson by wifiCFI


Did you know you can study all this material (and more) on the Free wifiCFI Mobile App?! Yep, hundreds of hours of study content, right at your fingertips.




AC = Advisory Circular

AD = Airworthiness Directive

ADIZ = Air Defense Identification Zone

ADS = Automatic Dependent Surveillance

ADS-B = Automatic Dependent Surveillance - Broadcast

AFSS = Automated Flight Service Station

AGL = Above Ground Level

AIM = Aeronautical Information Manual

AIRMET = Airmen’s Meteorological Information

ALS = Approach Light System

AOA = Angle of Attack

ASOS = Automated Surface Observing System

ATC = Air Traffic Control

ATIS = Automated Terminal Information Service

AWOS = Automated Weather Observing System

CAT = Category or Clear Air Turbulence

CFI = Certified Flight Instructor

CFIT = Controlled Flight Into Terrain

CFR = Code of Federal Regulations

CG = Center of Gravity

CTAF = Common Traffic Advisory Frequency

DA/DH = Decision Altitude/Decision Height

D-ATIS = Digital – Automatic Terminal Information Service

DP = Departure Procedure

DPE = Designated Pilot Examiner

DUATS = Direct User Access Terminal System

DVFR = Defense Visual Flight Rules

ETA/ETE = Estimated Time of Arrival/Estimated Time En-Route

FAA = Federal Aviation Administration

FAR = Federal Aviation Regulations

FBO = Fixed Base Operator

FL = Flight Level

FP = Flight Plan

FSDO = Flight Standards District Office

GA = General Aviation

GPS = Global Positioning System

GS = Glideslope

HAT = Height Above Touchdown

HIRL = High Intensity Runway Lights

HIS = Horizontal Situation Indicators

HIWAS = Hazardous In-Flight Weather Advisory Service

IAF = Initial Approach Fix

IAP = Instrument Approach Procedure

IAS = Indicated Airspeed

IF = Intermediate Fix

IFR = Instrument Flight Rules

ILS = Instrument Landing System

KIAS = Knots Indicated Airspeed

LAAS = Local Area Augmentation System

LDA = Localizer Directional Aid

LIRL = Low Intensity Runway Lights

LLWS = Low Level Wind Shear

LMM = Locator Middle Marker

LOA = Letter of Authorization

LOC = Localizer



LOM = Locator Outer Marker

LPV = Localizer Performance with Vertical Guidance

MAA = Maximum Authorized Altitude

MAP = Missed Approach Point

MALS = Medium-Intensity Approach Lighting System

MCA = Minimum Crossing Altitude

MCL = Middle Compass Locator

MDA/MDH = Minimum Descent Altitude/Minimum Descent Height

MEA = Minimum En-Route Altitude

MEL = Minimum Equipment List

METAR = Aviation Routine Weather Report

MHA = Minimum Holding Altitude

MIRL = Medium Intensity Runway Lights

MLS = Microwave Landing System

MM = Middle Marker

MOA = Military Operations Area

MOCA = Minimum Obstruction Clearance Altitude

MODE C = Altitude Reporting Mode of Secondary Radar

MODE S = Mode Select; Discreet Addressable Secondary Radar System with Data Link

MRA = Minimum Reception Altitude

MSA = Minimum Safe Altitude

MSL = Mean Sea Level

MTR = Military Training Route

MVFR = Marginal VFR

MVA = Minimum Vectoring Altitude

NAS = National Airspace System

NAVAID = Navigation Aid

NEXRAD = Next Generation Weather Radar

NM = Nautical Mile

NOTAM = Notice to Airmen

NTSB = National Transportation Safety Board

NTZ = No Transgression Zone

NWS = National Weather Service

ODP = Obstacle Departure Procedure

PAPI = Precision Approach Path Indicator

PAR = Precision Approach Radar

PFD = Primary Flight Display

PIC = Pilot In Command

PIREP = Pilot Weather Report

PT = Procedure Turn

RAIL = Runway Alignment Indicator Lights

RCO = Remote Communications Outlet

REIL = Runway End Identifier Lights

RNAV = Area Navigation

RNP = Required Navigation Performance

RPM = Revolutions Per Minute

RVR = Runway Visual Range

RVSM = Reduced Vertical Separation Minima

SCT = Scattered

SDF = Simplified Direction Finding

SIC = Second In Command

SID = Standard Instrument Departure

SIGMET = Significant Meteorological Information

SM = Statute Mile

SOP = Standard Operating Procedures

SRM = Single Pilot Resource Management

STAR = Standard Terminal Arrival Route

STC = Supplemental Type Certificate

SUA = Special Use Airspace

SVFR = Special VFR



TAC = Terminal Area Chart

TACAN = Tactical Air Navigation

TAS = True Airspeed

TAWS = Terrain Awareness and Warning System

TBO = Time Before Overhaul

TCAS = Traffic Alert and Collision Avoidance System

TH = Threshold

TODA = Takeoff Distance Available

TORA = Takeoff Run Available

TSA = Transportation Safety Administration

UTC = Coordinated Universal Time (UTC)

VASI = Visual Approach Slope Indicator

VDP = Visual Descent Point

VFR = Visual Flight Rules

VGS = Visual Glideslope Indicator

VHF = Very High Frequency

VNAV = Vertical Navigation

VOR = Very High Frequency Omnidirectional Range

VOR/DME = VOR with Distance Measuring Equipment

VORTAC = VOR with TACAN

VOT = VOR Test Facility

WAAS = Wide Area Augment System

WX = Weather


You can adjust your flashcard settings with the 3 lines in the upper right hand corner.


Commenti


bottom of page