# SDR USAA20100224SB026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 24, 2010
- Submitted: February 24, 2010
- Operation: Air carrier
- Aircraft: [N404US](https://openairdocs.org/aircraft/N404US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23886
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 20131ASMI
- Condition: Discharged
- Location: Cabin
- 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/USAA20100224SB026

## Discrepancy

BDL - MAINTENANCE REPORTED THE EMERGENCY LIGHTS POWERED BY M1197 POWER SUPPLY WERE INOPERATIVE.  MAINTENANCE REMOVED AND REPLACED THE BATTERY PACK AT STATION 969L (M1197 POWER SUPPLY) IN ASSOCIATION WITH MM 33-51-51.  OPERATIONAL CHECK GOOD.

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