# SDR AALA2020062219007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 20, 2020
- Submitted: June 22, 2020
- Operation: Air carrier
- Aircraft: [N573UW](https://openairdocs.org/aircraft/N573UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5939
- Aircraft time: 21,667 hours, 8,395 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 144635
- Condition: Faulty
- Location: Cabin
- Part time: 21,667 hours, 8,395 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2020062219007

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE, EPSU (EMERGENCY POWER SUPPLY UNIT) AT L2 (15WL) FAULT LIGHT ON.  REMOVED AND REPLACED L2 EPSU (15WL) PER AMM 33-51-38,  OPERATIONAL CHECK OKAY.

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