Which option correctly lists the four interphone buttons?

• A. PA Button, ATTND Button, Pilot Button
• B. PA Button, ATTND Button, Emergency Pilot Button, Radio Button
• C. PA Button, ATTND Button, Pilot Button, Emergency Button
• D. PA Button, ATTND Button, Pilot Button, Emergency Pilot Button

Answer: (D)

Interphone operations give cabin crew and pilots separate, purpose-built paths for communication. You need a way to address passengers, get the crew’s attention, contact the flight deck, and escalate emergencies quickly. The four controls on this system provide exactly that: the Public Address button to speak to passengers, the Attention button to alert crew about an incoming call or message, the Pilot button to reach the flight deck directly, and the Emergency Pilot button to escalate to the flight deck in urgent situations. A Radio button isn’t part of this interphone set, since radio is a different communication path, and using a generic Emergency button wouldn’t guarantee the direct, prioritized line to the pilots. So the correct combination is PA Button, ATTND Button, Pilot Button, Emergency Pilot Button.