# SDR AALA201801189021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 2018
- Submitted: January 19, 2018
- Operation: Air carrier
- Aircraft: [N156AN](https://openairdocs.org/aircraft/N156AN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6983
- Aircraft time: 6,271 hours, 2,440 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Inoperative
- 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/AALA201801189021

## Discrepancy

FOUND FAULT MESSAGE BAT/EPSU 15WL ON MCDU WHEN PERFORMING EMERGENCY BATTERY OPERATIONS TEST. REPLACED EMERGENCY BATTERY AT DOOR 2L PER AMM 33-51-38.

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