# SDR USAASB99218

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N521AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 23856
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 20121
- Condition: Inoperative
- Location: Row 2/10/12
- Stage of operation: IN
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAASB99218

## Discrepancy

DCA - DURING WEEKLY CHECK, MAINTENANCE FOUND THE EMERGENCY LIGHTS LOCATED AT SEAT ROWS 2L, 10R AND 12L INOPERATIVE.  MAINTENANCE REMOVED AND REPLACED M1136 POWER SUPPLY AT STATION 753 PER MM 33-51-00.  OPERATIONAL CHECK GOOD.  (M)

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