# SDR CALA2026061917198

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 18, 2026
- Submitted: June 19, 2026
- Operation: Air carrier
- Aircraft: [N477UA](https://openairdocs.org/aircraft/N477UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1514
- Aircraft time: 69,546 hours, 30,663 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Condition: Faulted
- Location: Lc
- 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/CALA2026061917198

## Discrepancy

FOUND L EPSU MESSAGE WHILE PERFORMING EMERGENCY LIGHTING TEST. R & R LC EPSU BOX PER AMM33-51-38, OPS CHECKED GOOD.

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