# SDR AALA202604148484

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2026
- Submitted: April 14, 2026
- Operation: Air carrier
- Aircraft: [N146AA](https://openairdocs.org/aircraft/N146AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6761
- Aircraft time: 32,018 hours, 12,694 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: No Test
- Location: Zone 200
- 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/AALA202604148484

## Discrepancy

AIRCRAFT WAS GROUNDED: MULTIPLE FAULTS FOR EMERGENCY POWER SUPPLY UNIT 10WL DISPLAYED DURING SYSTEM TEST.  MAINTENANCE REPLACED 10WL AND 15WL EMERGENCY POWER SUPPLY UNITS, THE EMERGENCY POWER SUPPLY BATTERY FOR 10WL, THE L1 DOOR SLIDE AND THE L2 DOOR SLIDE WHICH CLEARED ALL FAULTS.

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