What does the green 'down and locked' indication signify to the flight crew?

What does the green 'down and locked' indication signify to the flight crew?

• A. The gear is fully extended, in the locked position, and capable of supporting a landing load.
• B. The gear is retracted.
• C. The gear is in transit.
• D. The system is malfunctioning.

Answer: (A)

The green down and locked indication confirms that the landing gear is fully extended, the downlock mechanism is engaged, and the gear is ready to support the aircraft’s weight on landing. This status is what the crew relies on to know the wheels will touch down and stay in the extended position, resisting retraction under the load of the aircraft at touchdown. It signals that the extension and locking sequence is complete, including that the gear is not only down but securely locked to handle the landing forces. If the gear were still retracted or in transit, or if there were a system fault, you would not see this green indication, since the gear would not be both down and locked.

The green down and locked indication confirms that the landing gear is fully extended, the downlock mechanism is engaged, and the gear is ready to support the aircraft’s weight on landing. This status is what the crew relies on to know the wheels will touch down and stay in the extended position, resisting retraction under the load of the aircraft at touchdown. It signals that the extension and locking sequence is complete, including that the gear is not only down but securely locked to handle the landing forces. If the gear were still retracted or in transit, or if there were a system fault, you would not see this green indication, since the gear would not be both down and locked.