What color light illuminates on the Mid Cabin Exit Sign during a normal Interphone call from the Flight Deck?

The light that illuminates on the Mid Cabin Exit Sign during a normal Interphone call from the Flight Deck is pink. In aviation, different colors of lights are used to convey specific messages and statuses to the cabin crew and passengers. The pink light indicates a communication is in progress, specifically signaling that the Flight Deck is initiating a normal interphone call.

This system is vital for communication between the flight crew and cabin crew, ensuring that important messages can be conveyed clearly and efficiently. Other colors used for lights in aircraft typically indicate different situations; for instance, red may signal an emergency, while green might indicate an all-clear status. Understanding these signals is crucial for maintaining safety and operational efficiency on board the aircraft.