# SDR DALA2026081604678

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2026
- Submitted: August 16, 2026
- Operation: Air carrier
- Aircraft: [N319DN](https://openairdocs.org/aircraft/N319DN), registered now
- Make and model: Airbus A321-213
- Registry model: [Airbus A321-213](https://openairdocs.org/model/airbus-a321-213) (OpenAirDocs)
- Aircraft serial: 7479
- Aircraft time: 28,762 hours, 13,057 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: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026081604678

## Discrepancy

FOUND EPSU 15WL FAULTY.   REPLACED EPSUB15WL IAW AMM 33-51, OPS CHECKED NORMAL IAW AMM 3351. (LP 8533585 - AIRCRAFT WAS GROUNDED)

---
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.