# SDR EE4Y2024072820520

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2024
- Submitted: July 28, 2024
- Operation: General aviation
- Filed by: [Cooperativa Autogestionaria de Servicios Aeroindus, repair station EE4Y151M](https://openairdocs.org/faa-repair-station/EE4Y151M/cooperativa-autogestionaria-de-servicios-aeroindus.md) (OpenAirDocs)
- Aircraft: [N279NV](https://openairdocs.org/aircraft/N279NV), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 5250
- Aircraft time: 33,801 hours, 22,428 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Part serial: 831824
- Condition: Failed
- Location: Zone 200
- 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/EE4Y2024072820520

## Discrepancy

DURING EMERGENCY POWER SUPPLY CHECK IAW ALLEGIANT TASK 335100-03-1-001 AFT ENTRY AREA EPSU 13WL FAILED. THE EMERGENCY POWER SUPPLY UNIT 13WL WAS REPLACED IAW A320 AMM 33-51-38-000-001-A AND 33-51-38-400-001-A REV 44 DATE 05-01-2024, THE NEW PART PASS THE TEST. EPSU P/N ON 3214-31 S/N ON 946042.

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