# SDR CALA2021100101746

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2021
- Submitted: October 1, 2021
- Operation: Air carrier
- Aircraft: [N497UA](https://openairdocs.org/aircraft/N497UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1847
- Aircraft time: 59,288 hours, 25,838 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Epsu
- Part number: AD321431
- Condition: None
- Location: 12wl
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2021100101746

## Discrepancy

EPSU FAIL OPC EPSU 12WL REPLACED IAW AMM 33-51-38-400-002-A  REV.113.

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