Which of the following is a complete and acceptable set of alternative communication methods when the interphone is inoperative?

• A. Visual signals and standardized hand signals only.
• B. Public address system and visual signals only.
• C. Public address system only.
• D. No communication methods are acceptable.

Answer: (B)

When the interphone is inoperative, you need a backup plan that still keeps everyone informed and coordinated. The best choice combines the public address system with visual signals. The PA system allows you to make clear announcements to passengers and share information with the crew, ensuring instructions and updates reach everyone who needs them. Visual signals provide immediate, nonverbal cues to crew members in the cabin and help convey actions quickly when verbal communication is limited or crowded by noise.

Relying only on visual signals and hand signals misses the important ability to reach passengers with direct announcements. Using the PA system alone covers announcements but lacks nonverbal coordination needed in tight, noisy cabin environments. And of course, having no communication methods at all would compromise safety.