# SDR DALA2024012501137

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2024
- Submitted: January 25, 2024
- Operation: Air carrier
- Aircraft: [N397DN](https://openairdocs.org/aircraft/N397DN), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 9176
- Aircraft time: 13,357 hours, 5,786 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: UNKNOWN
- Condition: Faulted
- Location: Emergency Lights
- 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/DALA2024012501137

## Discrepancy

AIRCRAFT 3097, WHILE WORKING AMDS CARD 2561-4001-2L, FOUND EPSU 12WL FAULTING. CORRECTIVE ACTION: REPLACED EPSU 12WL. (LP 5038166)

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