# SDR AALA202605044945

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2026
- Submitted: May 4, 2026
- Operation: Air carrier
- Aircraft: [N12028](https://openairdocs.org/aircraft/N12028), registered now
- Make and model: Airbus A319-115
- Registry model: [Airbus A319-115](https://openairdocs.org/model/airbus-a319-115) (OpenAirDocs)
- Aircraft serial: 6456
- Aircraft time: 31,131 hours, 14,783 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Faulted
- 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/AALA202605044945

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: DURING EPSU TEST GOT CLASS 1 FAULT FOR EPSU 12WL. MAINTENANCE REPLACED AND PERFORMED GOOD OPS TEST OF 12WL BATTERY OF THE EMERGENCY POWER SUPPLY UNIT (EPSU) IAW AMM 33-51-36-000/400-002-A AMM 33-51-00-820-801-AMM 33-51-00-710-001-A, AMM 23-73-00-740-012-A.

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