PA Check requires which action?

• A. Perform a PA announcement from the assigned station
• B. Check PA system only at the assigned station
• C. Test interphone function
• D. All stations are checked for serviceability of the PA system

Answer: (D)

A PA Check tests the entire cabin public-address system, not just a single point. The goal is to ensure that any message can be heard clearly in every area of the aircraft, wherever passengers or crew may be, and that all components—microphones, amplifiers, speakers, and interphone connections—are working across all stations. Because announcements must reach everyone for safety and service reasons, the proper procedure is to check every station for the serviceability of the PA system. If a fault exists in any part of the network, it could go unnoticed if you only test one location, leaving some areas without a working announcement. If a fault is found, it should be reported and handled before flight.

Announcing from the assigned station only confirms that one location can output sound, which doesn’t verify the rest of the system. Testing the interphone function focuses on the interphone pathway, not the full PA distribution. Therefore the comprehensive action—checking all stations for PA serviceability—is the correct approach.