Definition
An uncrewed aircraft that can perform a flight or mission on its own, using onboard sensors, computers, and pre-programmed instructions to navigate, make decisions, and respond to conditions without continuous control by a human operator.
Plain English
An aircraft with no pilot on board that flies itself, making its own decisions during the flight rather than being steered the whole time by someone on the ground.
Context Anchor
Seen in discussions of unmanned aircraft, airspace sharing, inspection flights, surveillance, and future aviation systems.
Derivation
Autonomous comes from the Greek 'autos' (self) and 'nomos' (law or rule), meaning 'governed by its own rules.' In aviation, it points to an aircraft that runs itself rather than being told what to do moment by moment.
Why Pilots Care
Autonomous aerial vehicles share the airspace with crewed aircraft. Knowing the difference between a remotely piloted drone and a fully autonomous one matters for traffic awareness, separation, and understanding who, if anyone, is making real-time decisions in the other aircraft.
Intuition Check
Autonomous does not mean uncontrolled or unregulated. Here it means the aircraft can perform flight tasks on its own, while still operating under human planning, limits, and aviation rules.
Example Sentence 1
The survey company used an autonomous aerial vehicle to map the pipeline, with the aircraft following its programmed route and returning to base on its own.
Example Sentence 2
During the test flight the autonomous aerial vehicle adjusted altitude on its own when weather changed.