# SDR SB04127

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2004
- Submitted: September 20, 2004
- Operation: Air carrier
- Aircraft: N781AU
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 25020
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 20131A
- Condition: Discharged
- Location: Emergency Light
- 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/SB04127

## Discrepancy

CLT - MAINTENANCE REPORTED THE EMERGENCY LIGHTS, AT CABIN SEAT ROWS 12 THROUGH 19, INOPERATIVE.  MAINTENANCE REMOVED AND REPLACED THE BATTERY SUPPLY ASSEMBLY M1136.  OPERATIONAL CHECK GOOD.

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