What is the primary purpose of the AIP in the cockpit interphone system?

• A. Displaying flight path
• B. Scheduling crew rest
• C. Acts as a caller ID for inter-phone
• D. Controlling cabin lighting

Answer: (C)

The main idea here is identifying who is calling within the cockpit interphone system. The Aircraft Interphone Panel (AIP) is the interface that shows the origin of an interphone call and allows you to select or answer that call. This helps you know exactly who you’re communicating with—pilot to pilot, or cockpit to cabin crew—so you can respond appropriately and route messages correctly. It isn’t involved with displaying the flight path, scheduling crew rest, or controlling cabin lighting, which are handled by other systems. So, the primary purpose is to provide caller identification for inter-phone communications.