Original Flight Hardware: Microphone Selector Switch (F/O)

The MICROPHONE SELECT panel is part of the alternate oxygen supply system for the flight crew. This particular panel is the panel found on the right hand side of the cockpit of the Lockheed L-1011. The panel allows the crew member to switch the microphone from the boom microphone mounted on a regular headset to the microphone mounted inside the oxygen mask.




The panel further has a PRESS TO TALK button that keys the microphone and the PA switch that switches the respective oxygen mask microphone to the pubic address system.

Panel Location(s)

Original Flight Hardware: Passenger Address (PA)

The Passenger Address panel can be found on the pilot overhead panel. It is used to monitor PA announcements in the cabin area of the Lockheed L-1011. The panel that I have has a volume button for the PA monitor, two zone selectors labeled "FIRST CLASS" and "COACH AREA" and a dB meter.



The overhead panel drawing below shows the Passenger Address panel without the zone selectors and the volume indicator. It appears that the panel below was actually the more frequently used on the Lockheed L-1011.



Panel Location