Which system generates warning tones that are routed to helmet audio connections?

• A. AMU (Audio Management Unit)
• B. EICAS
• C. HDPH knob
• D. AOA indexer

Answer: (A)

The main idea here is how warning sounds are created and delivered to the pilot’s headset or helmet. The Audio Management Unit handles all audio sources for the crew, generating warning tones and routing them to the helmet audio connections so you hear alerts through your headset. Visual alerts and text messages shown on EICAS are separate from the actual audible tones and their routing. The other items don’t generate or route general warning tones: the headset volume control adjusts levels, not the generation, and the angle-of-attack indexer doesn’t handle audio alerts.