# SDR DALA2017112708355

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 25, 2017
- Submitted: November 28, 2017
- Operation: Air carrier
- Aircraft: [N301DV](https://openairdocs.org/aircraft/N301DV), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 6923
- Aircraft time: 3,933 hours, 2,917 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Faulted
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2017112708355

## Discrepancy

11WL EPSU FAULTING DURING EPSU SYSTEM TEST, REPLACED EPSU BATTERY 11WL

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