# SDR CALA2013082990856

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 4, 2013
- Submitted: October 15, 2013
- Operation: Air carrier
- Aircraft: [N434UA](https://openairdocs.org/aircraft/N434UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 592
- Aircraft time: 59,650 hours, 22,440 cycles
- Engine: Iae V2527A5
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 321454
- Part serial: 191
- Condition: Faulty
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2013082990856

## Discrepancy

DURING COMPLETION OF OPERATIONAL CHECK OF THE EMERGENCY LIGHTING DURING ROUTINE S-C THE PTP DISPLAYED FAULT CODE EPSU UNIT AFT LT.  R & R AFT LT EPSU 13WL, OPERATIONS CHECKED GOOD.

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