Service difficulty report · Battery Pack · Boeing 777222

Difficulty date
March 16, 2018
Submitted
March 19, 2018
Operation
Air carrier
Aircraft
N786UA
Make and model
Boeing 777222
Aircraft serial
26938
Aircraft time
89,225 hours, 12,235 cycles
Part
Battery Pack
Part number
ADD71701100
Part serial
74231
Condition
Discharged
Location
Emergency Light
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

DURING AN EMERGENCY LIGHT CAPACITY TEST, FOUND THE EMERGENCY LIGHT FOR ZONE A, RUN TIME & LIGHT 15 MINUTES. EMERGENCY BATTERY PACK WAS REPLACED, A NEW BATTERY PACK TESTED AND FOUND NORMAL IAW AMM 33-51-06-960-802, REV 82.