What was found
LLAR BACKUP LIGHT CAN NOT STAY ON FOR 15 MIUNTES. REPLACED LLAR AREA M023 BACKUP POWER SUPPLY BATTERY AND OP TEST CARRIED OUT, FOUND NORMAL AS PER AMM 33-51-06-960-802 REV 104 AND AMM 33-51-00-710-801 REV 104.
- Difficulty date
- July 10, 2025
- Submitted
- July 11, 2025
- Operation
- Air carrier
- Aircraft
- N220UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30223
- Aircraft time
- 89,091 hours, 11,585 cycles
- System (JASC)
- 3320 · Passenger Compartment Lighting
- Part
- Battery
- Part number
- D71701100
- Condition
- Discharged
- Location
- Zone 200
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.