# SDR WX0A2022021874003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 2022
- Submitted: February 18, 2022
- Operation: Air carrier
- Aircraft: [N258NV](https://openairdocs.org/aircraft/N258NV), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 4015
- Aircraft time: 30,591 hours, 20,204 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Epsu
- Part number: 321431
- Part serial: 804115
- Condition: None
- Stage of operation: IN
- How discovered: C
- Nature of condition: P
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WX0A2022021874003

## Discrepancy

12WL FAILS ON EPSU TEST FOR EMERG LIGHT SYSTEM. / REMOVED & REPLACED BATTERY ON EPSU (12WL) , BITE TEST OK AND OPS CHECK GOOD I/A/W AMM 33-51-38 PB 401."

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