# SDR AALA202604100776

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2026
- Submitted: April 10, 2026
- Operation: Air carrier
- Aircraft: [N9023N](https://openairdocs.org/aircraft/N9023N), registered now
- Make and model: Airbus A319-115
- Registry model: [Airbus A319-115](https://openairdocs.org/model/airbus-a319-115) (OpenAirDocs)
- Aircraft serial: 6349
- Aircraft time: 31,512 hours, 14,935 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- 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/AALA202604100776

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: EPSU SYSTEM TEST 10WL CLASS 1 FAULT. MAINTENANCE REPLACED EPSU UNIT AND BATTERY IAW TSM 33-51-00-810-822-A.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.