- MICROPHONE.
- Records sounds and conversation on the flight deck.
- HEADPHONE.
- Jack for connection of a standard headset.
- ERASE button.
- The entire contents of the recording can be erased. Only possible
on ground with parking brakes set.
- MONITOR indicator.
- Used to monitor the self test of the system when the TEST button
is pressed.
- TEST button.
- When pressed momentarily a selftest is initiated.
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