Definition
An engine-driven, fixed-wing aircraft heavier than air that is supported in flight by the dynamic reaction of the air against its wings.
Plain English
A powered aircraft with wings that don't move or flap. The engine pushes or pulls it forward, and air flowing over the fixed wings creates the lift that holds it up.
Context Anchor
Seen in FAA rules, aircraft category descriptions, pilot certificates, checklists, and general aviation training material.
Derivation
From the French 'aéroplane,' formed from the Greek 'aer' (air) and the Latin 'planus' (flat). The original idea was 'a flat surface moving through the air' — which captures the essence: a fixed wing creating lift as it travels forward.
Why Pilots Care
The word matters because FAA rules often apply differently to different kinds of aircraft. A rule written for an airplane may not apply the same way to a helicopter, balloon, or glider.
Intuition Check
Do not treat “airplane” as meaning every aircraft. In FAA use, an airplane is a powered fixed-wing aircraft; helicopters, balloons, and gliders are aircraft, but they are not airplanes.
Example Sentence 1
The pilot certificate was issued with an airplane single-engine land rating.
Example Sentence 2
Airplanes operating under visual flight rules must maintain required cloud clearances.