What must the FWD and AFT FAs verify concerning the PSU speakers when testing the PA button?

The forward and aft flight attendants must verify that the volume of the Public Announcement (PA) system is adequate when testing the PA button. This ensures that the announcements can be heard clearly by all passengers throughout the cabin, which is critical for safety and communication during the flight.

An adequate volume level means that the sound is loud enough to be heard without straining or causing discomfort, promoting effective communication. Insufficient volume could hinder critical announcements, especially in emergency situations, while excessive volume might lead to discomfort or confusion among passengers. Thus, confirming that the volume is appropriate ensures that the PA system functions correctly and meets safety regulations and passenger comfort standards.