Service difficulty report · Battery Pack · Boeing 777223

Difficulty date
January 8, 2019
Submitted
January 15, 2019
Operation
Air carrier
Aircraft
N778AN
Make and model
Boeing 777223
Aircraft serial
29587
Aircraft time
80,352 hours, 9,727 cycles
Part
Battery Pack
Part number
D71702001
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

AFT CABIN L4 DOOR EMERGENCY BATTERY PACK M33407 WAS INOPERATIVE. REPLACED THE EMERGENCY LIGHT BATTERY PACK AND PERFORMED SUCCESSFUL TEST IAW AMM 33-51-06-960-802, AND 803.