# SDR AALA201810239032

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2018
- Submitted: October 23, 2018
- Operation: Air carrier
- Aircraft: [N146AA](https://openairdocs.org/aircraft/N146AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6761
- Aircraft time: 10,086 hours, 3,827 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: No Test
- 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/AALA201810239032

## Discrepancy

EMERGENCY LIGHTS FAILED AN OPERATIONAL TEST WITH BATTERY , AND POWER SUPPLY UNIT 14WL MIRROR FAULT.  REPLACED THE POWER SUPPLY AND AFTER MDCU EMERGENCY LIGHTS TEST PAGE 19/20 OF PS, TESTED OK.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.