# SDR YENA2025122301256

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2025
- Submitted: December 23, 2025
- Operation: Air carrier
- Aircraft: [N2039J](https://openairdocs.org/aircraft/N2039J), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 09016
- Aircraft time: 92,559 hours, 34,592 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/YENA2025122301256

## Discrepancy

DURING HEAVY MAINTENANCE: DON'T PASS TEST EMERGENCY LIGHT FAULT EPSU 10WL; REMOVED AND REPLACED EPSU FIN 10WL IAW AMM 33-51-38-000-001-A, AMM 33-51-38-400-001-A TOOL USED MILLIOHMETER P/N 97F92003500000 S/N G0002 DUE DATE JUN-19-2026.

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