# SDR CALA2023120503547

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2023
- Submitted: December 5, 2023
- Operation: Air carrier
- Aircraft: [N782UA](https://openairdocs.org/aircraft/N782UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26948
- Aircraft time: 106,718 hours, 14,165 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Part serial: 215414
- Condition: Failed
- Location: R4 M33409
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023120503547

## Discrepancy

B777-33-3-7019, DR 4R EMER LIGHT BATTERY PACK M33409 CAPACITY CHECK FAILED. TRANSFER HX WO.2449344 AND DR R4 M33409 EMER LIGHT BATTERY AND BATTERY HCARGER REPLACED AND TESTED NORMAL AS PER AMM33-51-06.

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