Definition
A category of light aircraft, most commonly a powered hang glider or trike, in which the pilot controls pitch and roll by physically shifting the weight of the occupants and airframe relative to the wing, rather than by using conventional aerodynamic control surfaces such as ailerons or an elevator.
Plain English
An aircraft that is steered by the pilot leaning and pushing the wing one way or the other, instead of by moving sticks or pedals connected to flaps on the wings and tail.
Context Anchor
Seen when discussing light-sport aircraft, powered trikes, and examples of how different aircraft may be controlled.
Derivation
The name describes exactly how the aircraft is flown: the pilot shifts weight to control it. Knowing this makes the term self-explanatory once the method of control is understood.
Why Pilots Care
WSC aircraft fly under different control principles than conventional airplanes, and pilots train and certify for them separately. Recognizing the category prevents confusing its handling and regulations with those of standard fixed-wing aircraft.
Grounding Statement
Picture the pilot’s seat and frame hanging below a wing; moving that hanging weight changes how the wing carries the aircraft.
Intuition Check
WSC does not mean the pilot is simply leaning around in the seat, and it is not a weight-and-balance calculation. It means the aircraft is designed so shifting the hanging weight relative to the wing is the main way it is controlled.
Example Sentence 1
The student earned a sport pilot certificate in a WSC aircraft after completing training in a powered trike.
Example Sentence 2
In the aircraft the pilot used weight-shift control to roll into a turn by moving their hips to one side.