# SDR DALA1221493213

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2012
- Submitted: April 10, 2012
- Operation: Air carrier
- Aircraft: [N313US](https://openairdocs.org/aircraft/N313US), registered now
- Make and model: Airbus A320-211
- Registry model: [Airbus A320-211](https://openairdocs.org/model/airbus-industrie-a320-211) (OpenAirDocs)
- Aircraft serial: 153
- Aircraft time: 6,353 hours, 2,834 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Light
- Condition: Inoperative
- Location: Cabin
- 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/DALA1221493213

## Discrepancy

DURING NON ROUTINE CHECK, FOUND LT AFT EPSU UNIT FAULT TEST.  MAINTENANCE REPLACED EPSU UNIT AND OPERATIONAL CHECK WAS NORMAL.  AIRCRAFT WAS RETURNED TO SERVICE.

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