# SDR DALA2026022401319

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 24, 2026
- Submitted: February 24, 2026
- Operation: Air carrier
- Aircraft: [N305DN](https://openairdocs.org/aircraft/N305DN), registered now
- Make and model: Airbus A321-213
- Registry model: [Airbus A321-213](https://openairdocs.org/model/airbus-a321-213) (OpenAirDocs)
- Aircraft serial: 7149
- Aircraft time: 27,920 hours, 13,632 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- 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/DALA2026022401319

## Discrepancy

AIRCRAFT 3005, SEAT ROWS 28,29,33,34,35,38,39 EMERGENCY LIGHTS INOP. CORRECTIVE ACTION: DURING OPS CHKS FOUND EPSU 13L0L UBIT FAIL LIGHT ON. REPLACED EPSU 13L0L AGAIN PER A321 AMM 33-51. DURING BITE EPSU FAULTS OVERLOAD (FLASHING EXT AND INT INDICATION). ISOLATED ALL LOADS AND FOUND PIN T OF CONNECTOR 130L0-A TO BE SOURCE OF OVERLOAD/SHORT. RE- ASSEMBLED CONNECTOR 13L0L-A PER A321 ESPM 20-48-29. (LP 8417490)

---
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.