# SDR CALA2017110603961

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 2017
- Submitted: November 7, 2017
- Operation: Air carrier
- Aircraft: [N401UA](https://openairdocs.org/aircraft/N401UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 435
- Aircraft time: 76,213 hours, 29,014 cycles
- 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: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2017110603961

## Discrepancy

EMERGENCY LIGHTS BATTERY CAPACITY TEST FAILED, EPSU BAT CAP EMER R & L AFT. REMOVED AND REPLACED LEFT AFT BATTERY 13WL, CHECKED OK AMM33-51-38-400-002A. IDT INSPECTED BATTERY REPLACEMENT/ SYSTEM OPERATION. OK.

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