# SDR AALA202507080832

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2025
- Submitted: July 8, 2025
- Operation: Air carrier
- Aircraft: [N744P](https://openairdocs.org/aircraft/N744P), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1287
- Aircraft time: 62,914 hours, 39,988 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Part serial: 1197
- Condition: Fault Message
- Location: Zone 200 - Fuse
- Part time: 64,370 hours, 33,258 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/AALA202507080832

## Discrepancy

AIRCRAFT WAS GROUNDED: RECEIVED "EPSU UNIT EMER R" MESSAGE DURING OPERATIONAL TEST OF EMERGENCY LIGHTS AS REQUIRED IN PERIODIC SERVICE CHECK W/C 26L00005005. MAINTENANCE REPLACED EPSU UNIT EMER  ATA 33-51-38.

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