What was found
R4 DOOR EMERGENCY BATTERY PACK M33409 CAPACITY CHECK FAILED. THE BATTERY PACK M33409 WAS REPLACED AND TESTED CARRIED OUT WITH NORMAL RESULT IAW AMM 33-51-06.
- Difficulty date
- December 11, 2025
- Submitted
- December 11, 2025
- Operation
- Air carrier
- Aircraft
- N787UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26939
- Aircraft time
- 112,904 hours, 15,030 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- ADD71701100
- Condition
- No Test
- 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.