# SDR ASAA2025020355715

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 2025
- Submitted: February 4, 2025
- Operation: Air carrier
- Aircraft: [N407AS](https://openairdocs.org/aircraft/N407AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41731
- Aircraft time: 45,904 hours, 14,244 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2025020355715

## Discrepancy

REF T/C 78233001: EMERGENCY LIGHT BATTERY PACK M1675 FAILS CAPACITY CHECK. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY - BATTERY PACK M1675 REF AMM 33-51-06-960-805. FOUR MIG-51A TAGS INSTALLED AND REMOVED. OPS CHECK GOOD.

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