Service difficulty report · Battery Pack · Boeing 747451

Difficulty date
December 26, 2013
Submitted
December 27, 2013
Operation
Air carrier
Aircraft
N664US
Make and model
Boeing 747451
Aircraft serial
23819
Aircraft time
102,102 hours, 12,830 cycles
Part
Battery Pack
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

UPPER DECK LT EMERGENCY POWER RESERVOIR "BATTERY OK" LIGHT WON'T ILLUMINATE. REPLACED BATTERY, CHECKED OK IAW AMM 52-23.