Topic-icon ATA 23-51, Oxygen Mask Microphone

2 years 2 weeks ago - 2 years 2 weeks ago #733 by
A/C just out of "C" check. Both mask mics inop.

After some digging, found wires one and two swapped at back of stowage box plugs.

This reverse bias's the microphone and it will not work.

Last edit: 2 years 2 weeks ago by .

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