Which item is not part of the door preflight requirements?

Prepare for the Aircraft Ground Exam with multiple choice questions and expert explanations. Enhance your knowledge and ace the test.

The main idea here is understanding what a door preflight check verifies to ensure the exit is ready for use in an emergency. During this check you look at the door and its slide system, not at cabin systems.

Seals intact is part of this because a proper door seal prevents leakage and ensures the door fits correctly in the frame. Checking that the door is disarmed is also part of the preflight, since you want to confirm the door won’t automatically deploy the slide while the aircraft is on the ground. The slide pressure gauge being green is a direct indication that the evacuation slide is charged and ready to function if needed.

Cabin oxygen masks being deployed, however, is not part of the door preflight. Oxygen mask deployment is a cabin safety function related to depressurization or an emergency in the cabin, not the door’s mechanism or slide readiness. Masks should be stowed and secured during normal preflight checks.