Service difficulty report · Battery Pack · Boeing 747481

Difficulty date
July 4, 2019
Submitted
July 8, 2019
Operation
Air carrier
Aircraft
N429MC
Make and model
Boeing 747481
Aircraft serial
24833
Aircraft time
102,877 hours, 15,128 cycles
Part
Battery Pack
Part number
BPS73
Part serial
56053
Condition
Discharged
Location
Cabin
Stage of operation
NR
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

UPPER DECK STATION 540-560 LT EMERGENCY LIGHT CAP TEST FAILED. (<P>EMERGENCY POWER PACK REPLACED AS PER AMM 33-51-04.</P>)