# SDR DALA2020122304238

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 2020
- Submitted: December 23, 2020
- Operation: Air carrier
- Aircraft: [N801NW](https://openairdocs.org/aircraft/N801NW), registered now
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 0524
- Aircraft time: 74,128 hours, 9,607 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- 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/DALA2020122304238

## Discrepancy

INOPERABLE EMERGENCY POWER SUPPLY UNIT (EPSU) 14WL AND 16WL IN PASSENGER CABIN.  CORRECTIVE ACTION: REPLACED INOPERABLE EMERGENCY POWER SUPPLY UNIT (EPSU) 14WL AND 16WL IN PASSENGER CABIN, AS PER A330 AMM 33-51.

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