Plain English Meaning

The lights and horns in the cockpit that tell the pilot what the landing gear is doing — whether it is up, fully down and locked, still moving, or in a position that doesn't match the power and flap setting.

Full Definition

Cockpit lights, horns, or other alerts on a retractable-gear airplane that signal the position and status of the landing gear, including whether the gear is up, down and locked, in transit, or in an unsafe configuration relative to power and flap settings.

Context Anchor

Seen in retractable landing gear airplanes during gear extension, , checks, and abnormal gear situations.