The Lockheed L-1011 has a number of cockpit elements that are specific to the CABIN INTERPHONE and the PA system. The panel shown above it the one found on the overhead panel for the cabin interphone communication. The panel has a number of call buttons and a station selector switch as well as a call reset switch.
The image above shows the STATION SELECT SWITCH which is used to select the station to be called. The CALL SWITCH will illuminate when the flight station is called. A chime will sounds and CALL is illuminated in blue. Pressing the switchlight resets interphone for new call to be made or received.
The momentary switches under the CALL section have the following functions:
GND CREW ... sounds horn in nose wheel well.
ALL ... All station interphone chimes sound regardless of selected position of the station select switch.
SIGNAL ... Sounds chimes over PA system in the flight station, cabin and galley.
STA ... Chimes station elected with station selector switch.
Panel Location
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