What was found
AIRCRAFT IN BASE MAINTENANCE: FOUND OFAR (M33143) BATTERY PACK (LEFT SIDE) INOP. NEGATIVE LIGHTING CAME ON DURING TEST OF EMERGENCY BACK-UP LIGHTING. MAINTENANCE REPLACED LH DOOR #5 EMERGENCY BATTERY M33143 PER AMM 33-51-06.
- Difficulty date
- June 3, 2025
- Submitted
- June 5, 2025
- Operation
- Air carrier
- Aircraft
- N729AN
- Make and model
- Boeing 777323ER
- Aircraft serial
- 33127
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- D71702001
- Part serial
- 58698
- Condition
- Inoperative
- 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.