Service difficulty report · Battery · Boeing 777222

Difficulty date
August 5, 2025
Submitted
August 6, 2025
Operation
Air carrier
Aircraft
N780UA
Make and model
Boeing 777222
Aircraft serial
26944
Aircraft time
103,682 hours, 18,875 cycles
Part
Battery
Part number
S283W2037
Condition
Inoperative
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) RESERVOIR PRESSURE LEVEL CHECK PROCEDURE. UPON INSPECTION FOUND EPAS BATTERIES INOPERATIVE. NO GREEN LIGHT. R & R #1 R/H EPAS BATTERY MODULE AND BATTERY IAW AMM 52-11-20-400-813. OP CHECKED PASSED IAW AMM 52-11-20-700-812.