# SDR AALA201710029010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2017
- Submitted: October 2, 2017
- Operation: Air carrier
- Aircraft: N273AY
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 337
- Aircraft time: 78,525 hours, 11,117 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146220
- Part serial: 2048
- Condition: No Test
- Location: Emergency Lights
- Part time: 73,509 hours, 10,294 cycles
- 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/AALA201710029010

## Discrepancy

OPS CHECK OF THE EMERGENCY LIGHT SYSTEM FAILED. EPSU SYSTEM TEST SHOWS CLASS 1 EPSU 14WL.  REPLACED EPSU.

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