Service difficulty report · Power Supply · Boeing 777222

Difficulty date
January 10, 2026
Submitted
January 12, 2026
Operation
Air carrier
Aircraft
N226UA
Make and model
Boeing 777222
Aircraft serial
30226
Aircraft time
92,871 hours, 10,874 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

LEFT FWD M33093 POWER SUPPLY ASOC. EMERGENCY LIGHTS INOPERATIVE DURING AN OPS TEST WITH THE CONTROL SWITCHES PROCEDURE. R & R POWER SUPPLY M33093 IAW AMM 33-51-06-960-803. OPS CKD OK.