Which statement about the door status confirmation is true?

Which statement about the door status confirmation is true?

• A. Doors are closed and locked
• B. Doors are open
• C. Doors are closed but unlocked
• D. Doors status is unknown

Answer: (A)

Door status confirmation checks that every door is in a secure state before flight. The only condition that meets safe operation is that doors are closed and locked, with the latch engaged and a positive indication (often shown as CLOSED LOCKED) in the system. This ensures the door cannot be opened unintentionally in flight and preserves cabin pressure integrity and evacuation readiness. If a door were still open, or closed but unlocked, it would signal a fault or an unsafe configuration requiring corrective action. Unknown status is also unacceptable because there must be a verified, secure condition before taxi or takeoff.

Door status confirmation checks that every door is in a secure state before flight. The only condition that meets safe operation is that doors are closed and locked, with the latch engaged and a positive indication (often shown as CLOSED LOCKED) in the system. This ensures the door cannot be opened unintentionally in flight and preserves cabin pressure integrity and evacuation readiness. If a door were still open, or closed but unlocked, it would signal a fault or an unsafe configuration requiring corrective action. Unknown status is also unacceptable because there must be a verified, secure condition before taxi or takeoff.