# SDR DALA1115473257

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 5, 2011
- Submitted: March 7, 2011
- Operation: Air carrier
- Aircraft: [N357NW](https://openairdocs.org/aircraft/N357NW), registered now
- Make and model: Airbus A320-212
- Registry model: [Airbus A320-212](https://openairdocs.org/model/airbus-industrie-a320-212) (OpenAirDocs)
- Aircraft serial: 830
- Aircraft time: 38,330 hours, 17,126 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Epsu
- Condition: Faulted
- Location: Emergency Light
- 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/DALA1115473257

## Discrepancy

DURING A NON ROUTINE CHECK, FOUND THE EMERGENCY LIGHT SYS TEST FAULTS ESPU INTERNAL LOAD FOR SIGN 53L.  MX REPLACED ESPU AND FUNCTIONAL TEST WAS NORMAL. ACFT RETURNED TO SERVICE.

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