# SDR AALA202410285662

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2024
- Submitted: October 28, 2024
- Operation: Air carrier
- Aircraft: [N567UW](https://openairdocs.org/aircraft/N567UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5728
- Aircraft time: 34,748 hours, 14,215 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 143334
- Condition: No Test
- Location: Zone 200
- Part time: 34,739 hours, 14,213 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/AALA202410285662

## Discrepancy

AIRCRAFT WAS GROUNDED: WHILE PERFORMING EMERGENCY POWER SUPPLY UNIT SYSTEM TEST, EMERGENCY POWER SUPPLY UNIT (13WL) AFT LEFT DID NOT PASS TEST. REPLACED EMERGENCY POWER SUPPLY UNIT.

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