# SDR 2007UALA04304

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2007
- Submitted: October 23, 2007
- Operation: Air carrier
- Aircraft: [N840UA](https://openairdocs.org/aircraft/N840UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1522
- Aircraft time: 22,707 hours, 8,900 cycles
- Engine: Iae V2522A5
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Failed
- 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/2007UALA04304

## Discrepancy

EMERGENCY LIGHT SYSTEM TEST FAILED ON PTP PANEL (EPSU AFT L).   11-01-07  FOUND FAULTY EPSU. REPLACED EPSU.

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