Service difficulty report · Control Unit · Boeing 7879

Difficulty date
October 25, 2020
Submitted
October 27, 2020
Operation
Air carrier
Aircraft
N840AN
Make and model
Boeing 7879
Aircraft serial
40656
Aircraft time
6,891 hours, 764 cycles
Part
Control Unit
Part number
S37408011009
Condition
Inoperative
Location
Emergency Lights
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS NOT GROUNDED. WELS BATTERY AT DOOR 4L WILL NOT TURN ON. REPLACED WELS CONTROL UNIT, PER AMM 33-51-07.

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