# SDR AALA2019121769038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 14, 2019
- Submitted: December 17, 2019
- Operation: Air carrier
- Aircraft: [N176UW](https://openairdocs.org/aircraft/N176UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1499
- Aircraft time: 63,321 hours, 23,750 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145510
- Part serial: 3487
- Condition: Shorted
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019121769038

## Discrepancy

AIRCRAFT WAS GROUNDED: 10L FLOOR LEVEL LIGHTING WAS NOT WORKING. MAINTENANCE FOUND 10L LIGHT CREATED SHORT CIRCUIT DAMAGE TO EMERGENCY POWER SUPPLY UNIT AND REPLACED EMERGENCY POWER SUPPLY UNIT PER AMM 33-51-38 AND PERFORMED SATISFACTORY OPERATIONAL CHECK PER AMM 33-51-00.

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