# SDR DALA2017052204139

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2017
- Submitted: May 23, 2017
- Operation: Air carrier
- Aircraft: [N816NW](https://openairdocs.org/aircraft/N816NW), registered now
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 0827
- Aircraft time: 46,450 hours, 6,113 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Discharged
- Location: Cabin
- 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/DALA2017052204139

## Discrepancy

DURING COCKPIT 1A CHECK OPERATION TEST OF EPSU FAILED 3 BATTERIES.  REPLACED EPSU BATTERIES 11WL, 12WL, AND 18WL.

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