Service difficulty report · Power Supply · Boeing 777222

Difficulty date
October 6, 2026
Submitted
October 8, 2026
Operation
Air carrier
Aircraft
N229UA
Make and model
Boeing 777222
Aircraft serial
30557
Aircraft time
97,476 hours, 11,386 cycles
Engine
Pwa PW4090
Part
Power Supply
Part number
D71702001
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

DURING EMERGENCY LIGHT INSPECTION FOUND DOOR 2L INSIDE AFT EXIT SIGN & DOOR 2L SLIDE LIGHT INOP. AFTER TROUBLESHOOTING FOUND FAULTY POWER SUPPLY. REPLACED DOOR 2L AFT EMERGENCY LIGHTS POWER SUPPLY IAW AMM TASK 33-51-06-960-803. NOW ALL EMERGENCY LIGHTS OPS CHECK GOOD.