# SDR DALA2026012000414

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2026
- Submitted: January 20, 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: 27,294 hours, 12,372 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Failed
- 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/DALA2026012000414

## Discrepancy

AIRCRAFT 3016, DURING EPSU TEST FOUND EPSU FAIL INDICATION ON L1 DOOR (10WL).  REPLACED L1 AND R1 DOOR ESCAPE SLIDES ON AMDS CARDS 2561-4001-LF, AND 2561-4002-RF. RE-ACOMPLISHED EPSU BITE CHECK IAW AMM 33-51-38-400-002-A OPS CHECKS GOOD. (LP 1409327)

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