# SDR AALA202105179003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2021
- Submitted: May 17, 2021
- Operation: Air carrier
- Aircraft: [N154UW](https://openairdocs.org/aircraft/N154UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 5644
- Aircraft time: 24,662 hours, 9,801 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 142713
- Condition: Inoperative
- Location: Emergency Lights
- Part time: 24,662 hours, 9,801 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202105179003

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: EPSU 13WL AFT LEFT SHOWS FAULT DURING EPSU SYSTEM TEST. REPLACED EPSU 13WL AFT LEFT IAW AMM 33-51-38.

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