Service difficulty report · Battery · Boeing 777323ER

Difficulty date
July 3, 2020
Submitted
July 5, 2020
Operation
Air carrier
Aircraft
N726AN
Make and model
Boeing 777323ER
Aircraft serial
31550
Aircraft time
27,759 hours, 3,065 cycles
Part
Battery
Condition
Discharged
Location
L4 Door
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 NOT GROUNDED - L4 DOOR, EPAS (EMERGENCY POWER ASSIST SYSTEM) BATTERY PACK GREEN TEST LIGHT NOT BLINKING. REMOVED AND REPLACED INTERNAL BACK-UP 9-VOLT BATTERY PER AMM 52-12-20, OPERATIONAL CHECK GOOD, OKAY FOR SERVICE.