# SDR WX0A2022080574182

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 2022
- Submitted: August 5, 2022
- Operation: Air carrier
- Aircraft: [N285NV](https://openairdocs.org/aircraft/N285NV), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 5067
- Aircraft time: 33,671 hours, 22,730 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Epsu
- Part number: 321431
- Part serial: 876096
- Condition: None
- Stage of operation: IN
- How discovered: O
- Nature of condition: P
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WX0A2022080574182

## Discrepancy

CA REPORTS AFT EMERGENCY LIGHTS STAY ON W/ SWITCH IN ARMED POSITION. / ACCOMPLISHED EPSU BITE TEST IAW AMM 33-51-00-710-001, TEST FAULTED SWITCH 4 WL, R + R SWITCH 4WL IAW ESPM 20-30-00, OPS CHECK FAILED FAULTED 11WL BAT AND 13WL BAT. R + R EPSU BATTERIES 11WL + 13WL IAW AMM 33-51-38. OPS CHECK SATISFACTORY. ACCOMPLISHED EPSU BITE CHECK IAW AMM 33-51-00-710-001 W/ NO FAULTS."

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