Service difficulty report · Battery Pack · Boeing 777222

Difficulty date
May 22, 2026
Submitted
May 25, 2026
Operation
Air carrier
Aircraft
N217UA
Make and model
Boeing 777222
Aircraft serial
30550
Aircraft time
98,357 hours, 11,655 cycles
Part
Battery Pack
Part number
285W0955102
Part serial
D03300
Condition
Faulted
Location
Zone 200
Part time
18,678 hours, 3,675 cycles
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

EMERGENCY POWER ASSIST SYSTEM (EPAS) BATTERY, ELECTRICAL CHARGE CHECK (PED 1, 2, 3, 4) PROCEDURE - FOUND EPAS STATUS LIGHT NOT BLINKING IN ARMED POSITION AT DOOR 2 RIGHT EMERGENCY POWER ASSIST SYSTEM (EPAS) BATTERY PACK AT DOOR RIGHT 02 WAS REPLACED AND CHECKED IAW AMM 52-11-20/401. PERFORMED OPERATIONAL CHECK IAW AMM TASK 52-11-20-700-812. TEST PASSED. INSPECTED EPAS BATTERY FOR PROPER INSTALLATION AND BLOCKING DEVICES REMOVAL PER AMM 52-11-20/401.