Service difficulty report · Battery · Boeing 777222

Difficulty date
October 23, 2025
Submitted
October 24, 2025
Operation
Air carrier
Aircraft
N787UA
Make and model
Boeing 777222
Aircraft serial
26939
Aircraft time
112,417 hours, 14,975 cycles
Part
Battery
Condition
Discharged
Location
Zone 800
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) 9 VOLT BACK-UP BATTERY INSTALLATION BACKUP 9-VOLT BATTERY INSTALLATION - REMOVED DOOR 1L BUSTLE FOR EPAS BATTERY REPLACMENT REINSTALLED DOOR 1L BUSTLE REF AMM25-66-06 ACP'D INSPECTION ITEM, CLEARED AREA FOR DR 1L SLIDE BUSTLE INSTALL. OK TO INSTALL BUSTLE.