Skip to main content
To Champion the Colorado Unmanned Aircraft Ecosystem

Glossary of Terms

Terms commonly used in the aerospace/aviation industry.


3D 3-Dimensional
501(c)(6) non-profit organization devoted to business purposes

A&P Airframe and Powerplant
ABSAA Airborne Sense and Avoid
AF Air Force
AOCC Air Operation Control Center
ARFF Aircraft Rescue and Firefighting
ARTCC Air Route Traffic Control Center
ATO Air Traffic Organization
ATP Airline Transport Pilot
ATC Air Traffic Control
AUGNet Ad-Hoc Unmanned Aerial Vehicle Ground Networking
AUVSI Association for Unmanned Vehicle Systems International
AVO Air Vehicle Operator

BLM Bureau of Land Management
BVLOS Beyond Visual Line of Site

C2 Communications and Control
C3 Communications, command, and control
CASA Center for Collaborative Adaptive Sensing of the Atmosphere
CDOT Colorado Department of Transportation
CDOT-A Colorado Department of Transportation – Aeronautics Division
CFI Certified Flight Instructor
CFR Code of Federal Regulations
CO Colorado
COA Certificate of Authorization
CONOPS Concepts of Operations
COUAS Colorado UAS
DARPA Defense Advanced Research Projects Agency
DHS Department of Homeland Security
DIA Denver International Airport
DOC Department of Commerce
DOD Department of Defense
DOI Department of the Interior

EP External Pilot
ERAST Environmental Research Aircraft and Sensor Technology

FAA Federal Aviation Administration
FCC Federal Communications Commission
FEMA Federal Emergency Management Administration
FHSS Frequency Hopping Spread Spectrum
FL Flight Level
FOD Foreign Objects and Debris
FSDO Flight Standards District Office

GCS Ground Control Station
GHz Gigahertz
GPS Global Positioning System

IFR Instrument Flight Rules
IR Instrument Flight Rules Routes
ITAR International Traffic in Arms Regulations

JPDO Joint Planning and Development Office

LOS Line of Site

MACA Mid-Air Collision Avoidance
MHz Megahertz
MOA Military Operations Area

NAS National Airspace System
NASA National Aeronautics and Space Administration
NETUAS Networked Unmanned Aircraft System
NETUASC3 Networked Unmanned Aircraft System Communication, Command, Control
NEXGEN Next Generation
NEXRAD Next-Generation Radar
NSF National Science Foundation
NTSB National Transportation Safety Board
NTIA National Telecommunications and Information Administration

PIC Pilot in Command
POTUS President of the United States

R&D Research and Development
RAPS Robotic Aircraft for Public Safety
RPV Remotely Piloted Vehicle

SAA Sense and Avoid
SCAA Spaceport Colorado & Aeronautical Authority
SIF Space Infrastructure Foundation
SIR Screening Information Request
SSS Strategic Simulation Solutions
sUAS small Unmanned Aircraft Systems

TS Test Site

UA Unmanned Aircraft
UAS Unmanned Aerial System
U.S. United States of America
USAFA United States Air Force Academy
USGS United States Geological Survey

VHF Very High Frequency
VPOTUS Vice President of the United States
VTOL Vertical Take-Off Landing

WiFi Wireless Fidelity