NAVIGATION AND
COMMUNICATION
AIRPLANE
OPERATIONS
MANUAL
2-18-27
Page
4
Code
01
MARCH 30, 2001
PASSENGER ADDRESS CONTROLS AND INDICATORS
INTERPHONE CONTROL UNIT
1 - CABIN BUTTON
− Allows interphone communication between pilots and flight
attendant.
− Generates a “ding-dong” chime through the Passenger Address
Amplifier and illuminates the PILOT light on the Attendant’s Call
Panel.
− A striped bar illuminates inside the button to indicate that it is
pressed.
2 - CABIN EMERGENCY BUTTON
− Provides the same functions as the Cabin Button, except that it
illuminates the Pilot Emergency Light, labeled EMER PILOT, on
the Attendant’s Call Panel.
− A striped bar illuminates inside the button to indicate that it is
pressed.
3 - BACKUP INTERPHONE BUTTON
− Allows interphone communication between pilots and attendant,
in case of normal mode failure.
− Illuminates CABIN and CAB EMERG buttons on the ICU, and
PILOT and EMERG PILOT annunciators on the Attendant’s Call
Panel.
− A striped bar illuminates inside the button to indicate that is
pressed.
4 - FLIGHT ATTENDANT CALL BUTTON
− Generates a chime in the passenger address, to call a flight
attendant.
− During backup operation generates a tone in the chime located
in the passenger cabin ceiling, near the emergency exits.
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