# SDR DALA2026062603803

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 25, 2026
- Submitted: June 26, 2026
- Operation: Air carrier
- Aircraft: [N316DN](https://openairdocs.org/aircraft/N316DN), registered now
- Make and model: Airbus A321-213
- Registry model: [Airbus A321-213](https://openairdocs.org/model/airbus-a321-213) (OpenAirDocs)
- Aircraft serial: 7327
- Aircraft time: 28,636 hours, 13,056 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/DALA2026062603803

## Discrepancy

AIRCRAFT 3016, DURING EPSU SYS TEST. UNIT (15WL) FAULTED.   REPLACED EPSU UNIT (15WL) IAW AMM 33-51. (LP 7678449 - AIRCRAFT WAS GROUNDED)

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