# SDR DALA2023041002791

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2023
- Submitted: April 10, 2023
- Operation: Air carrier
- Aircraft: [N854NW](https://openairdocs.org/aircraft/N854NW), registered now
- Make and model: Airbus A330-223
- Registry model: [Airbus A330-223](https://openairdocs.org/model/airbus-a330-223) (OpenAirDocs)
- Aircraft serial: 0620
- Aircraft time: 75,903 hours, 9,888 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2023041002791

## Discrepancy

SHIP 3354 EMERGENCIA POWER SUPPLY UNIT 15WL UNIT FAULT RED LIGHT COME ON. CORRECTIVE ACTION: REPLACED EPSU 15WL. PERFORMED INTERFACE AND POWER UP TEST OF THE CIDS. PERFORMED BITE TEST OF THE SMOKE DETECTION SYSTEM. PERFORMED THE LOADPROGRAMMING (TECH-IN) PROCEDURE. PERFORMED OPERATIONAL CHECK OF THE EMERGENCY POWER SUPPLYUNITS BY BITE. TEST ARE GOOD. (2710495)

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