# SDR AALA202006129003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 11, 2020
- Submitted: June 12, 2020
- Operation: Air carrier
- Aircraft: [N401AN](https://openairdocs.org/aircraft/N401AN), registered now
- Make and model: Airbus A321-253N
- Registry model: [Airbus A321-253N](https://openairdocs.org/model/airbus-a321-253n) (OpenAirDocs)
- Aircraft serial: 8701
- Aircraft time: 3,274 hours, 957 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 162223
- Condition: Faulty
- Location: Cabin
- Part time: 3,274 hours, 957 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/AALA202006129003

## Discrepancy

AIRCRAFT NOT GROUNDED - EPSU (EMERGENCY POWER SUPPLY UNIT) 12WL FAULT, WHILE PERFORMING EPSU TEST.  REMOVED AND REPLACED EPSU 12WL PER AMM 33-51-38, OPERATIONAL CHECK GOOD.

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