PUBLIC ANNOUNCEMENT (PA) refers to which of the following?

• A. The public address system on board an aircraft; or the announcements given to customers using the public address system
• B. A device used to communicate with ground crews on the ramp
• C. The system for selecting in-flight entertainment
• D. The onboard emergency alert system

Answer: (A)

The main idea is that a PUBLIC ANNOUNCEMENT is the on-board loudspeaker system used to address passengers and deliver announcements. This is the public address system you use to speak to customers, give safety briefings, share flight updates, or provide service information.

It’s different from other systems: a device for communicating with ground crews on the ramp refers to ground interphones or ramp radios, not cabin announcements; the system for selecting in-flight entertainment is the IFE control system used by passengers to choose shows or music; and the onboard emergency alert system is a separate safety alert mechanism used to trigger urgent warnings, not the routine announcements you make to passengers.