# SDR CALA2018032801041

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2018
- Submitted: March 28, 2018
- Operation: Air carrier
- Aircraft: [N439UA](https://openairdocs.org/aircraft/N439UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 683
- Aircraft time: 68,397 hours, 27,077 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: No Test
- Location: Emergency Lights
- 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/CALA2018032801041

## Discrepancy

FAILED EMERGENCY LIGHT TEST.  DISPLAYED FAULTED POWER SUPPPLY IAW TSM 33-51-00-810-806-A,  SUSPECT EPSU 12WL.  REPLACED THE BATTERY PACK IAW AMM 33-51-00.  EMERGENCY LIGHT TESTED OK.

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