# SDR CALA2014011590154

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 2014
- Submitted: January 15, 2014
- Operation: Air carrier
- Aircraft: [N491UA](https://openairdocs.org/aircraft/N491UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1741
- Aircraft time: 38,607 hours, 16,844 cycles
- Engine: Iae V2527A5
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- 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/CALA2014011590154

## Discrepancy

DURING EMERGENCY LIGHT CHECK ON 2 SERVICE, ESPU BATTERY EMERGENCY LT IS FAULTING.   REPLACED EPSU EMERGENCY POWER SUPPLY UNIT BATTERY AT LT MID, OPERATIONS CHECKED OK.

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