# SDR USAASB04122

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2004
- Submitted: October 1, 2004
- Operation: Air carrier
- Aircraft: N375US
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 22954
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 20121
- Condition: Failed
- Location: Emergency Light
- 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/USAASB04122

## Discrepancy

PIT - FOUND MAINTENANCE REPORTED THE EMERGENCY LIGHTS AT SEAT ROWS 17 THROUGH 21 INOPERATIVE.  MAINTENANCE REMOVED AND REPLACED THE POWER SUPPLY AND BATTERY PACK, P/N 2013-1A FOR AFFECTED SEAT ROWS.  OPERATIONAL CHECK GOOD.  (M)

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