Abbreviations
A
AAF — Army Air Field
AAS — Airport Advisory Service
AAUP — Attention All Users Page
AC — Advisory Circular
ADF — Automatic Direction Finder
ADIZ — Air Defense Identification Zone
ADS — Automatic Dependent Surveillance
ADS-B — Automatic Dependent Surveillance-Broadcast
Advsry — Advisory
AFB — Air Force Base
AFIS — Automatic Flight Information Service
AFS — Air Force Station
AFSS — Automated Flight Service Station
AGL — Above Ground Level
AIM — Aeronautical Information Manual
AIRAC — Aeronautical Information Regulation And Control
AK — Alaska
AL — Approach and Landing
ANG — Air National Guard
APP — Approach
APP CON — Approach Control
APP CRS — Approach Course
Apt — Airport
APV — Approaches with Vertical Guidance
ARP — Airport Reference Point
ARTCC — Air Route Traffic Control Center
ASDA — Accelerate-Stop Distance Available
ASDE-X — Airport Surface Detection Equipment-Model X
ASOS — Automated Surface Observing Station
ASR — Airport Surveillance Radar
ATC — Air Traffic Control
ATIS — Automatic Terminal Information Service
ATS — Air Traffic Service
AUNICOM — Automated Aeronautical Advisory Station
AWOS — Automated Weather Observing Station
B
Baro-VNAV — Barometric Vertical Navigation
BS — Broadcast Station
C
CAC — Caribbean Aeronautical Chart
CAT — Category
CFA — Controlled Firing Areas
CFR — Code of Federal Regulations
CH — Channel
CLNC DEL — Clearance Delivery
CNF — Computer Navigation Fix
COP — Changeover Point
CPDLC — Controller Pilot Data Link Communication
CRS — Course
CT — Control Tower
CTAF — Common Traffic Advisory Frequency
CVFP — Charted Visual Flight Procedure
CZ — Control Zone (Canada)
D
DA — Decision Altitude
DA — Density Altitude
D-ATIS — Digital Automatic Terminal Information Service
DH — Decision Height
DME — Distance Measuring Equipment
DND — Department of National Defense (Canada)
DoD — Department of Defense
DOF — Digital Obstacle File
DP — Departure Procedure
DT — Daylight Savings Time
DVA — Diverse Vector Area
E
E — East
EFAS — Enroute Flight Advisory Service
EFB — Electronic Flight Bag
Elev — Elevation
EMAS — Engineered Materials Arresting System
F
FAA — Federal Aviation Administration
FAF — Final Approach Fix
FAP — Final Approach Point
FAR — Federal Aviation Regulation
FBO — Fixed-Based Operator
FIR — Flight Information Region
FL — Flight Level
FLIP — Flight Information Publication
FMS — Flight Management System
FREQ — Frequency
FRZ — Flight Restricted Zone
FSDO — Flight Standards District Office
FSS — Flight Service Station
G
GBAS — Ground-Based Augmentation System
GCO — Ground Communications Outlet
GLS — GBAS Landing System
GND — Ground
GND CON — Ground Control
GNSS — Global Navigation Satellite System
GP — Glide Path
GPS — Global Positioning System
GS — Glide Slope
GS — Ground Speed
H
HAA — Height Above Airport
HAR — High Altitude Redesign
HAT — Height Above Touchdown
HCH — Heliport Crossing Height
HF — High Frequency
HIRL — High Intensity Runway Lights
HS — Hot Spot
I
