Service difficulty report · Battery · Boeing 777223

Difficulty date
September 4, 2020
Submitted
September 7, 2020
Operation
Air carrier
Aircraft
N791AN
Make and model
Boeing 777223
Aircraft serial
30254
Aircraft time
78,388 hours, 10,034 cycles
Part
Battery
Part number
285W0955102
Part serial
D01597
Condition
Inoperative
Location
L4 Epas
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

AIRCRAFT IN BASE MAINTENANCE - L4 DOOR, EPAS (EMERGENCY POWER ASSIST SYSTEM) ARMING LIGHT INOP. REMOVED AND REPLACED L4 DOOR EPAS BATTERY PER AMM 52-11-20, OPERATIONAL CHECK SATISFACTORY.