# SDR ASAA2024031148375

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2024
- Submitted: March 12, 2024
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 38,369 hours, 12,085 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Failed
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2024031148375

## Discrepancy

DURING T/C 78233001 BATTERY PACK M1673 FAILED. GROUNDED - YES. REMOVED AND REPLACED BATTERY PACK M1673 REF WDM 33-51-14-3 AND AMM 33-51-06. OPS CHECK GOOD,.

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