# SDR CALA2019011800123

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2019
- Submitted: January 18, 2019
- Operation: Air carrier
- Aircraft: [N404UA](https://openairdocs.org/aircraft/N404UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 450
- Aircraft time: 81,295 hours, 30,953 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Power Supply
- Part number: 32145410
- Condition: Faulty
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2019011800123

## Discrepancy

EPSU BATTERY EMER L FAULT ON AAP WHEN EMERGENCY LIGHT OPS CHECK IS COMPLETED. REPLACED LEFT EMER PWR SUPPLY AND BATTERY PER AMM 33-51-38. TEST OK. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1248304  SN OFF 8072 IPC REFERENCE # POWER SUPPLY, C OFF 31-3350-9-9001 8072 ON 31-3350-9-9001 8098.

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