# SDR USAA2012092000003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2012
- Submitted: September 21, 2012
- Operation: Air carrier
- Aircraft: [N189UW](https://openairdocs.org/aircraft/N189UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1425
- Aircraft time: 40,264 hours, 14,481 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Part serial: 1150
- Condition: Inoperative
- Location: Cabin
- Part time: 37,995 hours, 14,242 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012092000003

## Discrepancy

2S CHECK - EMERGENCY LIGHT TEST FAILS ON PROGRAMMING TEST PANEL.  REPLACED EMERGENCY POWER SUPPLY UNIT 13WL IAW A321 AMM 33-51-38.  PERFORMED EMERGENCY LIGHT TEST IAW A321 AMM 33-51-00-710-001-A CHECKED GOOD.

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