# SDR AALA201601079005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2016
- Submitted: January 7, 2016
- Operation: Air carrier
- Aircraft: [N539UW](https://openairdocs.org/aircraft/N539UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4082
- Aircraft time: 20,957 hours, 8,167 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 133259
- Condition: Faulty
- Location: Cabin
- Part time: 20,948 hours, 8,163 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201601079005

## Discrepancy

AIRCRAFT WAS NOT GNDED.  EPSU 13WL FAULTS.  REPLACED BATTERY & REPLACED EPSU 13WL IAW AMM 33-51-38 PB 401.  SEE AALA201601079008 FOR ADDITIONAL PART INFORMATION.

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