What is the difference between an aircraft and an airplane?
An aircraft is any machine that flies by deriving support from the atmosphere, including aeroplanes, helicopters, gliders, balloons and airships. An airplane—spelt aeroplane in British English—is a powered, fixed-wing, heavier-than-air aircraft. Every airplane is therefore an aircraft, but many aircraft are not airplanes.
In Aviation & Real-World Flying, this is a classification distinction. It is not based on an aircraft's size, engine type, speed or ability to carry passengers.
Aircraft vs airplane definitions
Aircraft is the umbrella term; an airplane or aeroplane is one technical type within it.
| Term | Meaning | Examples |
|---|---|---|
| Aircraft | A machine supported in flight by reactions of the surrounding air | Aeroplanes, helicopters, gliders, balloons and airships |
| Airplane / aeroplane | A powered, heavier-than-air aircraft deriving lift chiefly from fixed wings | Light propeller aircraft, business jets, fighters and conventional airliners |
Here, fixed-wing does not mean every part of the wing is immovable. Flaps, ailerons, spoilers and even variable-sweep wings can move. The distinction is that the main lifting surfaces do not rotate continuously like a helicopter's rotor.
The umbrella wording also explains why we discuss how aircraft landing gear works: gear can include wheels, skids or floats, depending on the aircraft category.
What counts as an aircraft but not an airplane?
Helicopters, ordinary gliders, balloons, airships and many drones are aircraft but not airplanes.
- Helicopter: a heavier-than-air aircraft whose rotating rotor blades provide lift. It is rotorcraft, not an airplane.
- Glider: a fixed-wing aircraft that normally flies without continuous engine power, so it does not meet the basic power-driven airplane definition. Motor gliders may retain a separate certification category despite having an engine.
- Balloon: a lighter-than-air aircraft with no powered means of steering through the air.
- Airship: powered and steerable, but still lighter than air rather than an airplane.
- Drone: an unmanned aircraft. A powered fixed-wing drone can be an unmanned airplane, while a multicopter drone is rotorcraft.
This distinction matters in simulation because different aircraft categories require different inputs. Our guide to choosing PC flight controls for aeroplanes and helicopters covers the practical differences.
Hovercraft are not normally classed as aircraft because their supporting air cushion reacts against the ground or water. Rockets and spacecraft are not automatically aircraft either: rocket thrust does not depend on reactions with the surrounding atmosphere.
Are airplane and aeroplane the same word?
Airplane and aeroplane mean the same thing; the spelling changes by region.
- Airplane is standard in American English and appears in many US aviation definitions.
- Aeroplane is the usual British English spelling.
- Plane is an informal shortening and is less precise than either technical term.
The plural of aircraft is normally aircraft, not “aircrafts”. One aircraft and several aircraft use the same form.
Which term should you use?
Use aircraft for the broad category and aeroplane or airplane when you specifically mean a powered fixed-wing aircraft.
- A hangar containing a helicopter and two aeroplanes holds three aircraft, not three airplanes.
- A light propeller aeroplane is both an aircraft and an aeroplane.
- A passenger jet is an aircraft, an aeroplane and usually an airliner; “airliner” describes its transport role.
- A helicopter may be powered and heavier than air, but it is not an airplane because its main lifting surfaces rotate.
Certification rules sometimes place powered-lift designs, tiltrotors and motor gliders into specialised categories. For licensing, registration, operating limitations or aircraft manuals, use the exact category defined by the relevant regulation or document rather than relying on casual use of “plane”.