Service difficulty report · Battery Pack · Boeing 777222

Difficulty date
August 3, 2018
Submitted
August 6, 2018
Operation
Air carrier
Aircraft
N223UA
Make and model
Boeing 777222
Aircraft serial
30224
Aircraft time
72,984 hours, 8,555 cycles
Part
Battery Pack
Part number
ADD71701100
Part serial
210047
Condition
Discharged
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

DURING THE PERFORMANCE OF AN EMERGENCY LIGHT OPS TEST, THE R4 DOOR SLIDE LIGHT DID NOT ILLUMINATE. REPLACED THE M33409 BATTERY PACK AND TESTED NORMAL IAW AMM 33-51-06-960-802, REV 83.