What is the arrival all call response for the 1L door on the A350?

What is the arrival all call response for the 1L door on the A350?

• A. 1L DISARMED
• B. 1L DISARMED and cross checked
• C. 1L ARMED and cross checked
• D. 1L DISARMED and not cross checked

Answer: (B)

The key idea is ensuring the door is in a safe state and verified by a second crew member at arrival. On the A350, the 1L door should be shown as disarmed so that opening it won’t trigger an automatic slide deployment during taxi and arrival operations, and it must be cross checked to confirm the status is correct. This two-part confirmation—disarmed plus cross-check—keeps the evacuation system from activating accidentally and ensures two set of eyes have validated the state before passengers begin disembarking. That’s why the correct response is the exact phrase “1L DISARMED and cross checked.” The other options either miss the cross-check, or indicate the door is armed, which is not the standard arrival-state for a passenger disembarkation phase.

The key idea is ensuring the door is in a safe state and verified by a second crew member at arrival. On the A350, the 1L door should be shown as disarmed so that opening it won’t trigger an automatic slide deployment during taxi and arrival operations, and it must be cross checked to confirm the status is correct. This two-part confirmation—disarmed plus cross-check—keeps the evacuation system from activating accidentally and ensures two set of eyes have validated the state before passengers begin disembarking. That’s why the correct response is the exact phrase “1L DISARMED and cross checked.” The other options either miss the cross-check, or indicate the door is armed, which is not the standard arrival-state for a passenger disembarkation phase.