In a typical landing gear retraction sequence, which order is correct?

• A. Gears retract first, then doors close, uplocks engage, and indicators show the transition.
• B. Doors open, then retract, then uplocks engage.
• C. Doors begin to close and gear retracts into the well, uplocks engage to lock gear in stowed position, doors close for streamlining, and indicators show gear down and locked transitioning to up.
• D. Doors begin to close after hydraulics release pressure, then gear retracts.

Answer: (C)

The sequence hinges on secure, interlocked stowage of the gear before the bay is streamlined. As retraction starts, the gear moves into the well while the surrounding doors begin to close. Once the gear is fully retracted, the uplocks engage to lock the gear in the stowed position, ensuring it can’t move unexpectedly. After locking, the doors finish closing to smooth the airflow around the bay, reducing drag. Cockpit indicators then transition from showing gear down and locked to showing gear up and locked, confirming the gear is safely stowed.

This order is important because locking the gear before the doors are fully closed prevents any movement or misalignment that could damage equipment or create drag, and it ensures the aerodynamic fairing is completed only after the gear is securely held. Other sequences either start with doors opening or closing at inappropriate times or omit the uplock securing step, which would compromise safety and proper indication.