What was found
AIRCRAFT WAS NOT GROUNDED: DOOR 4L EMERGENCY BATTERY PACK FAILED DURING EMERGENCY LIGHTS BATTERY PACKS FUNCTIONAL CHECK JOB CARD 72C20033010. MAINTENANCE REPLACED EMERGENCY BATTERY PACK IAW AMM 33-51-06.
- Difficulty date
- December 16, 2023
- Submitted
- December 19, 2023
- Operation
- Air carrier
- Aircraft
- N773AN
- Make and model
- Boeing 777223
- Aircraft serial
- 29583
- Aircraft time
- 94,467 hours, 12,034 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- D71702001
- Condition
- No Test
- Location
- Zone 800 - Doors
- 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.