Function of mechanical downlock indicator

Answer 1

The function of a mechanical downlock indicator used on an aircraft's landing gear enables the pilot to have a visual indication that the landing gear is down and locked, which means that the aircraft can land safety. Normally, the indication on the cockpit is via 3 green lights near the landing gear control handle.

There is a pair of electrical contacts that closes when the aircraft's landing gear extends to an angle that is beyond the over-centre of the linkages which then completes an electrical path to light up the landing gear control handle's green light to indicate gears down and locked.

Answer 2

The mechanical downlock indicator is a safety feature that indicates when the landing gear is fully down and locked in place for landing. It provides visual confirmation to the pilots that the landing gear is securely in position and ready for touchdown. This is important for safe landings and to prevent any landing gear malfunctions.