Which action is part of arming the door on the B737-700 (73G)?

• A. Remove girt bar from slide cover brackets and place into floor brackets
• B. Center and firmly secure the girt bar
• C. Verify no excess slide material is dragging on the floor
• D. Crosscheck that 1L and 1R are armed

Answer: (A)

Arming a door means readying the emergency slide for deployment by attaching it to the floor brackets with the girt bar. On the 73G, this is done by removing the girt bar from its slide cover brackets (where it’s stowed) and placing it into the floor brackets at the door sill, ensuring the bar is fully seated. This physical action secures the slide to the aircraft structure so it will deploy properly during an evacuation.

The other actions aren’t the arming step itself: centering and firmly securing the girt bar isn’t the standard described arming action; verifying no excess slide material is dragging is a post-arm safety check to make sure the slide path is clear; and crosschecking that 1L and 1R are armed is a subsequent verification step, not the act of arming the door.