Service difficulty report · Power Supply · Boeing 777222

Difficulty date
October 6, 2025
Submitted
October 7, 2025
Operation
Air carrier
Aircraft
N223UA
Make and model
Boeing 777222
Aircraft serial
30224
Aircraft time
94,857 hours, 11,262 cycles
Part
Power Supply
Part number
D71702030
Condition
Faulted
Location
Zone 200
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

REF W/C 23-3350-1-0001, DURING CHECK FOUND THAT THE PATH EMERGENCY LIGHTS FROM SEAT ROW 40 TO SEAT ROW 53 WILL NOT COME ON. REMOVED AND REPLACED POWER SUPPLY AND BATTERY REF AMM 33-51-06. OPS CHECK NORMAL.