Service difficulty report · Battery Pack · Boeing 777223

Difficulty date
July 11, 2020
Submitted
July 15, 2020
Operation
Air carrier
Aircraft
N766AN
Make and model
Boeing 777223
Aircraft serial
32880
Aircraft time
68,181 hours, 8,375 cycles
Part
Battery Pack
Part number
285W0955102
Part serial
D02837
Condition
Discharged
Location
L1 Door
Stage of operation
IN
How discovered
C
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

AIRCRAFT IN BASE MAINTENANCE - L1 DOOR, EPAS (EMERGENCY POWER ASSIST SYSTEM) BATTERY DOES NOT FLASH GREEN WHEN ARMED. REMOVED AND REPLACED EPAS BATTERY PACK PER AMM 52-11-20 (AALA202007149001), OPERATIONAL TEST GOOD. INSTALLED SERVICEABLE 9-VOLT BACK-UP BATTERY (2 EA) PER AMM 52-11-20 (AALA202007149002), OPERATIONAL TEST GOOD.