# SDR CALA2024031800761

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2024
- Submitted: March 18, 2024
- Operation: Air carrier
- Aircraft: [N475UA](https://openairdocs.org/aircraft/N475UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1495
- Aircraft time: 65,591 hours, 28,635 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Condition: Failed
- Location: Emergency Lights
- Part time: 765,591 hours, 728,635 cycles
- 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/CALA2024031800761

## Discrepancy

DURING OPS TEST OF CABIN EMERGENCY LIGHTS EPSU ARME/ON EMER R&L FAILS ON PTP PANEL.REF TO PEMCO R 15100.0020 REMOVED AND REPLACED EPSU11WR AND 12WL. OPS CHECK GOOD IAW A320 AMM33-51-38.  REMOVED AND REPLACED EPSU 11WL (BAD FROM STOCK) AN 12WL. OPS CHE CK GOOD. IAW A320 AMM 33-51-38.

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