Which of the following is NOT a function of the AIP?

• A. Acts as a caller ID for inter-phone
• B. Shows which lavatory smoke detector has been activated
• C. Displays aircraft speed
• D. Alerts FA's of routine and emergency calls

Answer: (C)

The Aircraft Intercommunication Panel is a cabin crew tool for managing calls and alerts. It handles interphone communication between crew stations, provides indicators that reveal who is calling, lights up and identifies which lavatory smoke detector has been activated so the crew can respond quickly, and alerts flight attendants to routine and emergency calls. Displaying the aircraft’s speed, however, is not part of this panel’s function; speed data come from the flight deck instruments and systems, not the AIP. So the option that doesn’t fit is the one about showing aircraft speed.