What was found
DR 4R M33408 EMER LT BATTERY DEEP CYCLE PROCEDURE FAILED. EMER LIGHT BATTERY REPLACED AND TESTED NORMAL IAW AMM33-51-06.
- Difficulty date
- June 8, 2025
- Submitted
- June 9, 2025
- Operation
- Air carrier
- Aircraft
- N772UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26930
- Aircraft time
- 105,306 hours, 19,811 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- ADD71701100
- Condition
- Failed
- 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.