Which item is a verifiable cue that the 1L door is in the DISARMED position?

Which item is a verifiable cue that the 1L door is in the DISARMED position?

• A. Arming lever in DISARMED position
• B. Door pin in place
• C. Access cover closed
• D. Purser/FL only: Door status indicators on 1L FA panel are amber

Answer: (A)

The main cue to verify that the 1L door is DISARMED is the arming lever itself. When the lever is in the DISARMED position, it directly communicates that the door’s escape slide is not armed, so the door is in the disarmed state. This lever provides a clear, mechanical indication that is designed to be readily checked by crew in normal operations. The other indicators aren’t as reliable for confirming DISARMED. A door pin being in place could be related to maintenance or other procedures and doesn’t guarantee the arming state. An access cover being closed only shows the door is shut, not whether the slide is armed or disarmed. Status indicators on the flight deck or crew panel can vary by aircraft, operator, or lighting conditions and may reflect conditions other than the door’s arming state.

The main cue to verify that the 1L door is DISARMED is the arming lever itself. When the lever is in the DISARMED position, it directly communicates that the door’s escape slide is not armed, so the door is in the disarmed state. This lever provides a clear, mechanical indication that is designed to be readily checked by crew in normal operations.

The other indicators aren’t as reliable for confirming DISARMED. A door pin being in place could be related to maintenance or other procedures and doesn’t guarantee the arming state. An access cover being closed only shows the door is shut, not whether the slide is armed or disarmed. Status indicators on the flight deck or crew panel can vary by aircraft, operator, or lighting conditions and may reflect conditions other than the door’s arming state.