# SDR USAA20100308SB030

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2010
- Submitted: March 8, 2010
- Operation: Air carrier
- Aircraft: [N441US](https://openairdocs.org/aircraft/N441US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24812
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Fuse
- Part number: 036000570010
- Condition: Blown
- 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/USAA20100308SB030

## Discrepancy

ORD - MAINTENANCE REPORTED THE EMERGENCY EXIT LIGHTS AT SEAT ROWS 24, 25 AND RIGHT AFT SERVICE DOOR INOPERATIVE.  MAINTENANCE REPLACED FUSE IN BATTERY SUPPLY UNIT IN AFT CABIN.  OPS CHECK GOOD PER MM 33-51-51.

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