Who reads the PA if PBS-600 does not work?

The answer indicates that if the PA (public address) system fails to operate as intended during a flight, the AFT FA (Flight Attendant) assumes the responsibility of communicating with passengers. Flight attendants are trained to manage in-flight communications and ensure passenger safety, which includes using alternative methods to relay information when standard systems fail. The AFT FA, located at the rear of the aircraft, is in a prime position to address passengers directly.

Understanding the roles of other positions helps clarify why the AFT FA is the most appropriate choice. The Captain, while a key leader in the cockpit, primarily focuses on flying the aircraft and handling operational matters rather than passenger communication directly. CSA (Customer Service Agent) personnel operate on the ground and do not have responsibilities related to in-flight announcements or communication. Ground personnel are focused on pre-boarding and post-landing logistics and would not be involved in-flight communications. Hence, the AFT FA is the designated individual to step in during a PA system failure to ensure that all necessary information reaches passengers efficiently and effectively.