# SDR DALA2025102207729

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2025
- Submitted: October 22, 2025
- Operation: Air carrier
- Aircraft: [N373DX](https://openairdocs.org/aircraft/N373DX), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 8734
- Aircraft time: 21,174 hours, 9,137 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/DALA2025102207729

## Discrepancy

CABIN EMER LIGHTS OUT AT ROWS 11-14 ABC.   14WL FAILED EPSU TEST, REPLACED 14WL AND BATTERY REF A321 AMM 3-51. OPS TEST GOOD. (LP 7782876)

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