# SDR USAA2011080800010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2011
- Submitted: August 8, 2011
- Operation: Air carrier
- Aircraft: N457UW
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 25021
- Aircraft time: 55,412 hours, 36,429 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Charger
- Part number: 20121
- Condition: Inoperative
- 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/USAA2011080800010

## Discrepancy

MAINTENANCE REPORTED THE EMERGENCY LIGHTS INOP IN CENTER OF AIRCRAFT CABIN.  MAINTENANCE REMOVED AND REPLACED THE BATTERY CHARGER ASSEMBLIES, INCLUDING THE BATTERY PACKS, PER AMM 33-51-51.  OPS CHECK OK.

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