| Abbreviation or Acronym |
Definition |
| 14 CFR |
Title 14 of the Code of Federal Regulations |
| AC |
Advisory Circular |
| ACR |
Airman Certification Representative |
| ACS |
Airman Certification Standards |
| ADM |
Aeronautical Decision-Making |
| AELS |
Aviation English Language Standard |
| AFS |
Flight Standards Service |
| AIM |
Aeronautical Information Manual |
| AKTC |
Airman Knowledge Testing Center |
| AKTR |
Airman Knowledge Test Report |
| ASOS |
Automated Surface Observation System |
| ATC |
Air Traffic Control |
| ATIS |
Automatic Terminal Information Service |
| AWOS |
Automated Weather Observation System |
| CFI |
Certificated Flight Instructor |
| CRM |
Crew Resource Management |
| CTAF |
Common Traffic Advisory Frequency |
| DOT |
Department of Transportation |
| FAA |
Federal Aviation Administration |
| FSDO |
Flight Standards District Office |
| FTN |
FAA Tracking Number |
| GPS |
Global Positioning System |
| IACRA |
Integrated Airman Certification and Rating Application |
| METAR |
Aviation Routine Weather Reports (Meteorological Aerodrome Report) |
| MTR |
Military Training Routes |
| NAS |
National Security Areas |
| ODA |
Organization Designation Authorization |
| PIC |
Pilot-in-Command |
| RPE |
Remote Pilot Examiner |
| SAFO |
Safety Alert for Operators |
| SIDA |
Security Identification Display Area |
| SMS |
Safety Management System |
| sUAS |
Small Unmanned Aircraft System |
| TAF |
Terminal Area Forecast |
| TFR |
Temporary Flight Restrictions |
| TRSA |
Terminal Radar Service Area |
| UAS |
Unmanned Aircraft Systems |
| UNICOM |
Aeronautical Advisory Communication Station |
| VFR |
Visual Flight Rules |
| VLOS |
Visual Line of Sight |
