# SDR CALA2025032803275

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 2025
- Submitted: March 28, 2025
- Operation: Air carrier
- Aircraft: [N834UA](https://openairdocs.org/aircraft/N834UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1420
- Aircraft time: 72,698 hours, 32,376 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Part serial: 008193
- Condition: No Test
- Location: Zone 200
- Part time: 778,666 hours, 734,417 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/CALA2025032803275

## Discrepancy

EMERGENCY POWER SUPPLY UNIT FAILED OPERATIONAL CHECK OF CABIN EMERGENCY LIGHTS. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT IAW AMM TASK 33-51-38-000-001-A0 & TASK 33-51-38-400-001-A. PERFORMED CABIN EMERGENCY LIGHTS TEST. OPS CHECK GOOD.PARTS USED: 31-3350-9-9001, QTY :1 ROTABLE PARTS CHG:TT # 1559446 SN OFF 4161 PN OFF 31-3350-9-9001.POWER SUPPLY, P OFF 31-3350-9-9001 4161 ON 31-3350-9-9001 1064

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