What does "Positive Control of the Flight Deck Door" entail?

"Positive Control of the Flight Deck Door" refers to the protocol where there is always someone in charge of the door while it is open. This means that at all times, there must be an individual actively managing access to the flight deck to ensure its security. The importance of this control is primarily rooted in safety and security measures that protect passengers, crew, and the aircraft from unauthorized access.

When the door is open, it could potentially expose the flight deck to unmonitored entry, which could lead to a security risk. Therefore, by ensuring that someone is responsible for monitoring the door whenever it is open, the airline maintains a high standard of safety. This practice also aligns with aviation security regulations and standard operating procedures.

In contrast, the other options do not fully encapsulate the meaning of positive control. For instance, stating that no one should approach the door does not account for necessary communication and procedures that might require access. Limiting control to just the pilot overlooks the role of cabin crew in maintaining safety protocols. Lastly, indicating that cabin crew must seal the door when in flight focuses only on closure without addressing the constant management needed during access.