# SDR USAA20110414SB053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2011
- Submitted: April 14, 2011
- 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: 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/USAA20110414SB053

## Discrepancy

BDL - MAINTENANCE REPORTED THE FORWARD SERVICE DOOR EMERGENCY EXIT INDICATOR LIGHT INOPERATIVE.  MAINTENANCE REMOVED AND REPLACED FIVE AMP FUSE ON EMERGENCY LIGHT BATTERY PACK M1133.  OPERATIONAL CHECK GOOD.  REF: B737 SSM 33-51-00 & B737 AMM 33-51-51.

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