Service difficulty report · Power Supply · Boeing 747422

Difficulty date
July 1, 2022
Submitted
July 5, 2022
Operation
Air carrier
Aircraft
N480MC
Make and model
Boeing 747422
Aircraft serial
28812
Aircraft time
78,226 hours, 9,046 cycles
Part
Power Supply
Part number
BPS73
Part serial
46013
Condition
Inoperative
Stage of operation
IN
How discovered
C
Nature of condition
O
Precautionary procedure
O

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

What was found

M5934 EMER LIGHT BATTERY PACK CAPACITY CHECK FAIL(M5934 POWER SUPPLY ASSY REPLACED IAW AMM 33-51-04)