What was found
AIRCRAFT WAS NOT GROUNDED: DURING WC 72T20033001 ACCOMPLISHMENT IT WAS FOUND BOTH BACKUP POWER SUPPLY FAULT AT OFAR. MAINTENANCE REPLACED BOTH BACKUP POWER SUPPLY AT OFAR IAW AMM 33-29-12, TESTED OK.
- Difficulty date
- December 18, 2025
- Submitted
- December 19, 2025
- Operation
- Air carrier
- Aircraft
- N731AN
- Make and model
- Boeing 777323ER
- Aircraft serial
- 33523
- Aircraft time
- 44,454 hours, 5,163 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- 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.