Service difficulty report · Battery Pack · Boeing 747481

Difficulty date
July 13, 2017
Submitted
July 17, 2017
Operation
Air carrier
Aircraft
N429MC
Make and model
Boeing 747481
Aircraft serial
24833
Aircraft time
96,607 hours, 13,850 cycles
Part
Battery Pack
Part number
20131A
Part serial
2123
Condition
No Test
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

ALL EMERGENCY LIGHTS FAILED TO STAY ON A MINIMUM OF 5 MINUTES. REMOVED AND REPLACED THE BATTERY PACKS IAW AMM 33-51-04.