# SDR DALA2015122207690

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 2015
- Submitted: December 22, 2015
- Operation: Air carrier
- Aircraft: [N820NW](https://openairdocs.org/aircraft/N820NW), registered now
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 0859
- Aircraft time: 38,567 hours, 5,010 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: No Test
- 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/DALA2015122207690

## Discrepancy

DURING EPSU BATTERY CAPACITY TEST, BATTERIES AT 11WL, 13WL, AND 14WL FAILED TEST.  REPLACED EPSU BATTERIES 11WL, 13WL, AND 14WL.

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