# SDR F3LA202603020375

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2026
- Submitted: March 2, 2026
- Operation: Air carrier
- Aircraft: [N354FR](https://openairdocs.org/aircraft/N354FR), registered now
- Make and model: Airbus A320-251N
- Registry model: [Airbus A320-251N](https://openairdocs.org/model/airbus-a320-251n) (OpenAirDocs)
- Aircraft serial: 09026
- Aircraft time: 20,099 hours, 9,234 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 163194
- Condition: No Test
- Location: Zone 200
- Part time: 20,099 hours, 9,234 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/F3LA202603020375

## Discrepancy

DURING HEAVY CHECK EPSU TEST FAILED DUE TO POSITION 10WL UNIT FAILURE.  REMOVED AND REPLACED EPSU UNIT AT POSITION 10WL IN REF TO AMM 33-51-38-000/400-001-A. EPSU SYSTEM TEST OK./END/

---
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.