What keeps the gear down and locked in position?

What keeps the gear down and locked in position?

• A. Downlock springs
• B. Uplock springs
• C. Hydraulic locks
• D. Electrical interlocks

Answer: (A)

The gear is kept down and locked by the downlock springs. Once the gear extends, a downlock mechanism engages a locking point, and the spring biases that lock into place so it remains secured. This spring-assisted lock provides a positive mechanical hold that resists retraction and helps keep the gear down even if hydraulic pressure changes. Uplock springs serve to keep the gear in the up position, not the down, so they don’t perform this function. Hydraulic locks can help prevent retraction if pressure is lost, but the primary feature that physically retains the gear in the down and locked position is the downlock spring action.

The gear is kept down and locked by the downlock springs. Once the gear extends, a downlock mechanism engages a locking point, and the spring biases that lock into place so it remains secured. This spring-assisted lock provides a positive mechanical hold that resists retraction and helps keep the gear down even if hydraulic pressure changes. Uplock springs serve to keep the gear in the up position, not the down, so they don’t perform this function. Hydraulic locks can help prevent retraction if pressure is lost, but the primary feature that physically retains the gear in the down and locked position is the downlock spring action.