Service difficulty report · Battery · Boeing 777224

Difficulty date
December 17, 2025
Submitted
December 19, 2025
Operation
Air carrier
Aircraft
N78005
Make and model
Boeing 777224
Aircraft serial
27581
Aircraft time
124,027 hours, 12,716 cycles
Part
Battery
Condition
Inoperative
Location
Epas
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

EMERGENCY POWER ASSIST SYSTEM (EPAS) RESERVOIR PRESSURE LEVEL CHECK PROCEDURE, R4 DOOR, EPAS BATTERY PACK GREEN TEST LIGHT INOPERATIVE. REPLACED EPAS 9V BATTERIES AT R4 DOOR IAW AMM 52-11-20-400-806-002. OPS CHECKED GOOD.