# SDR SB05163

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2005
- Submitted: December 5, 2005
- Operation: Air carrier
- Aircraft: N439US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24781
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 20131A
- Condition: Discharged
- Location: Forward Cabin
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SB05163

## Discrepancy

MCO - MAINTENANCE REPORTED THE EMERGENCY LIGHTS IN THE FORWARD CABIN INOPERATIVE.  MAINTENANCE REMOVED AND REPLACED THE BATTERY PACK IN THE FORWARD LEFT-HAND CABIN.  OPERATIONAL CHECK GOOD.

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