# SDR AALA2018122019004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2018
- Submitted: December 21, 2018
- Operation: Air carrier
- Aircraft: [N987AM](https://openairdocs.org/aircraft/N987AM), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7079
- Aircraft time: 7,456 hours, 2,868 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Condition: Failed
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: L, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2018122019004

## Discrepancy

DURING AN EMERGENCY LIGHT TEST,  AN MCDU MESSAGE FOR THE BATTERY IN POWER SUPPLY 13WL, ILLUMINATED.  MAINTENANCE REPLACED THE POWER SUPPLY AND PERFORMED A SATISFACTORY OPERATIONAL CHECK IAW AMM 33-51-00.

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