# SDR DALA1201943146

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2012
- Submitted: January 17, 2012
- Operation: Air carrier
- Aircraft: [N346NB](https://openairdocs.org/aircraft/N346NB), registered now
- Make and model: Airbus A319-114
- Registry model: [Airbus A319-114](https://openairdocs.org/model/airbus-a319-114) (OpenAirDocs)
- Aircraft serial: 1796
- Aircraft time: 4,973 hours, 2,599 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 32145410
- Condition: Failed
- 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/DALA1201943146

## Discrepancy

DURING EMERGENCY LIGHT SYSTEM TEST DURING SERVICE CHECK, AFT LEFT EPSU BATTERY FAILED.  MAINTENANCE REPLACED EPSU (13WL) AND EPSU BATTERY PER AMM.  SYSTEM TEST NOW OK.

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