# SDR USAA2014020300017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2014
- Submitted: February 3, 2014
- 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: 44,519 hours, 16,330 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145510
- Part serial: 2301
- Condition: Failed
- Location: Cabin
- Part time: 42,570 hours, 15,693 cycles
- 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/USAA2014020300017

## Discrepancy

EMERGENCY LIGHT FAILED TEST, EMERGENCY POWER SUPPLY UNIT FAIL INT LOAD MID LT, EPSU EXT LOAD MID LT.  REPLACED EMERGENCY POWER SUPPLY UNIT IAW AMM 33-51-35, OPERATIONS NORMAL.

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