| ACAS | airborne collision avoidance system
|
| ATC | air traffic control
|
| ATM | air traffic management
|
| BVLOS | beyond visual line-of-sight
|
| C2 | command and control Link
|
| DAA/D&A | detect and avoid
|
| EASA | European Aviation Safety Agency
|
| EUROCAE | European Organisation for Civil Aviation Equipment
|
| EUROCONTROL | European Organisation for the Safety of Air Navigation
|
| FAA | Federal Aviation Administration
|
| ICAO | International Civil Aviation Organization
|
| HALE | High Altitude Long Endurance
|
| IFR | instrument flight rules
|
| ITU/WRC | International Telecommunications Union/World Radio Conference
|
| JAA | Joint Aviation Authority
|
| JARUS | Joint Authorities for Rule Making Unmanned Aircraft Systems
|
| MIDCAS | Mid-air Collision Avoidance System
|
| MTOM | maximum take-off mass
|
| NextGen | Next Generation Air Transportation (USA Equivalent to SESAR)
|
| RPA | remotely piloted aircraft
|
| RPAS | remotely piloted aircraft system
|
| RPASP | Remotely Piloted Aircraft Systems Panel (ICAO)
|
| RPS | remote pilot station
|
| SESAR | Single European Sky ATM Research
|
| UAS | unmanned aircraft system
|
| UAV | unmanned aerial vehicle (obsolete term)
|
| VLOS | visual line-of-sight
|
