# SDR UALA2009040801000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2009
- Submitted: April 10, 2009
- Operation: Air carrier
- Aircraft: [N453UA](https://openairdocs.org/aircraft/N453UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1001
- Aircraft time: 33,615 hours, 13,599 cycles
- Engine: Iae V2527A5
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 321454
- Part serial: 1736
- 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/UALA2009040801000

## Discrepancy

DURING NR 3 SERVICE CHECK THE CABIN EMERGENCY LIGHT CHECK FAILED.  EPSU INT LOAD AFT L FAULT.  BITE TEST ON THE EPSU AT DOOR 2-LEFT SHOWS SAME FAULT.  REPLACED EPSU AND BATTERY AT DOOR 2-LEFT (13WL).  OPS TEST OK.

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