Service difficulty report · Battery · Boeing 747481F

Difficulty date
February 6, 2021
Submitted
February 10, 2021
Operation
Air carrier
Aircraft
N404KZ
Make and model
Boeing 747481F
Aircraft serial
34283
Aircraft time
50,090 hours, 10,098 cycles
Part
Battery
Part number
20131A
Part serial
96411
Condition
Inoperative
Location
Emergency Lights
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

FOUND EMER LIGHT L5731, L5732 CAN NOT STAY 15 MIN (<P>IAW AMM 33-51-04-902-001-001 REV 100 REPLACED EMER LIGHT POWER BATTERY ON M5168 POWER SUPPLY AND CONDITION CHK NORMAL/ IAW AMM 33-51-04-902-001-001 REV 100. PERFORMED INSTALLATION TEST OF M5168 BATTERY PACK, THE RESULT WAS SATISFACTORY.</P>)