# SDR AALA2020083199009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2020
- Submitted: August 31, 2020
- Operation: Air carrier
- Aircraft: [N157AA](https://openairdocs.org/aircraft/N157AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6998
- Aircraft time: 13,541 hours, 5,179 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Condition: Inoperative
- Location: Emergency Lights
- 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/AALA2020083199009

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: FAILED TEST OF EMERGENCY POWER SUPPLY UNIT 13WL, LOCATED IN LH AFT CABIN. REPLACED EPSU WITH NEW IAW AMM 33-51-38, OPS CHECK GOOD.

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