The Difference Between Fixed-Wing, Rotorcraft, and Other Aircraft Types
January 23, 2026
How the FAA Classifies Aircraft
The FAA Civil Aviation Registry assigns a type code to every registered aircraft. These codes describe the fundamental physical category of the aircraft — how it generates lift and what makes it fly. Understanding these categories helps you interpret registry data and make sense of the enormous variety of aircraft in U.S. skies.
Fixed-Wing Aircraft
Fixed-wing aircraft are what most people picture when they think of airplanes: a fuselage with wings that remain stationary relative to the body of the aircraft. Lift is generated by air flowing over the wing shape. The FAA splits fixed-wing aircraft into two subcategories:
- Single-engine fixed-wing — One engine, typically piston-powered. This is the most common type in the registry, representing a huge proportion of private and training aircraft. Examples include the Cessna 172 and Piper Cherokee.
- Multi-engine fixed-wing — Two or more engines. Includes everything from twin-engine piston planes to large commercial jets. Examples include the Beechcraft Baron and Boeing 737.
Rotorcraft
Rotorcraft generate lift using rotating blades rather than fixed wings. Helicopters are the most common rotorcraft in the registry. They are used extensively in emergency medical services, law enforcement, offshore oil and gas operations, and personal transport. Autogyros (or gyroplanes) are a less common rotorcraft variant.
Gliders
Gliders — also called sailplanes — have no engine and rely on rising air currents to stay aloft after being towed or winch-launched. They are registered in their own category and have a devoted community of pilots who fly for sport and competition.
Balloons
Hot air balloons and gas balloons are registered with the FAA and appear in the registry. They operate very differently from powered aircraft, with no directional control beyond altitude changes to find favorable wind currents.
Blimps and Experimental Aircraft
Lighter-than-air aircraft including blimps have their own classification. The registry also contains a large number of experimental amateur-built aircraft — homebuilt planes constructed by their owners under an FAA exemption. These are a distinct and growing segment of the registry.
You can browse aircraft by type to see how many of each category are currently registered, or look at the most common models to see which specific aircraft dominate each category.