Definition
A structural support, typically a wire, cable, rod, or rigid member, used to hold a part of an aircraft or airship in position by resisting tension or compression loads. Stays are commonly found bracing wings, control surfaces, landing gear, and the framework of lighter-than-air craft.
Plain English
A wire, cable, or rod that holds a part of an aircraft steady by stopping it from moving or flexing under load.
Context Anchor
Seen in aircraft structure and maintenance descriptions, especially on aircraft with visible support wires or braces.
Derivation
From the Old English 'stæg,' a nautical term for a rope supporting a ship's mast. The aviation use carries the same idea: a tensioned line or rod that keeps a structural piece in its proper position.
Why Pilots Care
A damaged or loose stay can mean a supported part is no longer being held correctly, so it should be inspected before flight.
Analogy
A stay is like a support line on a tent pole: it may look simple, but it helps keep the larger structure in the right position.
Intuition Check
Do not read stay here as the everyday verb meaning “remain.” In aircraft structure, a stay is a physical support or brace.
Example Sentence 1
The mechanic inspected each stay on the biplane's wing for signs of corrosion or fraying.
Example Sentence 2
Loose tail stays can allow the stabilizer to shift and affect pitch control.