# SDR AALA201608219002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2016
- Submitted: August 24, 2016
- Operation: Air carrier
- Aircraft: [N540UW](https://openairdocs.org/aircraft/N540UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4107
- Aircraft time: 22,217 hours, 8,782 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 2509
- Condition: Inoperative
- Location: Cabin
- Part time: 55,446 hours, 10,772 cycles
- 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/AALA201608219002

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE, POWER SUPPLY UNIT AT POSITION NR 12 FOR EMERGENCY EXIT LIGHTS IS INOPERATIVE.  REPLACED EMERGENCY POWER SUPPLY UNIT AND ACCOMPLISHED A SATISFACTORY OPS CHECK IAW TC 26C00000018.

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