Which statement about the door arming and disarming procedures is true?

Which statement about the door arming and disarming procedures is true?

• A. The door streamer should be placed across the door viewing window during arming
• B. Door streamer is placed across the door viewing window during disarming
• C. The Velcro patch over the manual inflation handle should be hidden during arming
• D. Crosschecking is not required for 1L and 1R

Answer: (A)

The key idea here is understanding how arming a 737 door is visually confirmed and verified by the crew. When a door is armed, a door streamer is placed across the door viewing window as a clear, at-a-glance indicator that the slide is engaged and ready to deploy in an emergency. This visual cue helps the crew quickly confirm status, especially in a busy cabin. Because of that, placing the streamer across the viewing window during arming is the correct action. Crosschecking is a safety step that ensures another crew member verifies the door status, the girt bar engagement, and the streamer placement. Saying that crosschecking isn’t required for the front left and front right doors contradicts standard procedures, so that statement is false. The Velcro patch over the manual inflation handle is there to keep the handle accessible and its status visible. Hiding it during arming would hinder a quick manual inflation check if needed, so it shouldn’t be concealed. Finally, the streamer is not placed during disarming; it’s used to indicate the armed state. During disarming, the streamer would be removed or not used to signal that the door is no longer armed. In short, the streamer across the viewing window during arming provides the correct, visible status cue; crosschecking remains required for those doors; the inflation handle patch should not be hidden; and the streamer is not used during disarming.

The key idea here is understanding how arming a 737 door is visually confirmed and verified by the crew. When a door is armed, a door streamer is placed across the door viewing window as a clear, at-a-glance indicator that the slide is engaged and ready to deploy in an emergency. This visual cue helps the crew quickly confirm status, especially in a busy cabin. Because of that, placing the streamer across the viewing window during arming is the correct action.

Crosschecking is a safety step that ensures another crew member verifies the door status, the girt bar engagement, and the streamer placement. Saying that crosschecking isn’t required for the front left and front right doors contradicts standard procedures, so that statement is false.

The Velcro patch over the manual inflation handle is there to keep the handle accessible and its status visible. Hiding it during arming would hinder a quick manual inflation check if needed, so it shouldn’t be concealed.

Finally, the streamer is not placed during disarming; it’s used to indicate the armed state. During disarming, the streamer would be removed or not used to signal that the door is no longer armed.

In short, the streamer across the viewing window during arming provides the correct, visible status cue; crosschecking remains required for those doors; the inflation handle patch should not be hidden; and the streamer is not used during disarming.