What is the exact PA FA1 code that initiates disarming the doors?

• A. "Doors disarmed and cross-checked."
• B. "Preparing to disarm."
• C. "FA verify and disarm doors. Standby for all call."
• D. "All call for disarm."

Answer: (C)

The key idea here is using the exact phrase that triggers the disarm action in the PA FA1 system. The correct code is “FA verify and disarm doors. Standby for all call.” This exact line instructs the crew to perform a verification step and then carry out the disarm of the doors, while also signaling to be ready for the all-call broadcast. It’s precise and action-oriented, which is essential in drill situations where ambiguity can delay crucial safety actions.

The other phrases don’t initiate the sequence in the same way: one describes a completed state after disarming, another is only a preparatory note, and another similarly lacks the explicit verification and disarm action required to start the procedure. The chosen line communicates both the required steps and the readiness signal, making it the correct, most effective initiation command.