# SDR CALA2018111902403

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2018
- Submitted: November 19, 2018
- Operation: Air carrier
- Aircraft: [N439UA](https://openairdocs.org/aircraft/N439UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 683
- Aircraft time: 70,437 hours, 28,014 cycles
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Wire
- Condition: Arced
- Location: Nr 1 Ac Buss
- Stage of operation: CR
- How discovered: V
- Nature of condition: H
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2018111902403

## Discrepancy

MULTPLE SYSTEMS POWERED BY AC BUS 1 FAILED DURING FLIGHT RELATED TO AC BUS 1. UPDATED MAA CODE FIX USING VENDOR MAA SCREEN ARCING. INSPECT #1 ENGINE IDG CABLE CONNECTOR AT PYLON FOR SIGNS OF MAC RELATED WORK ORDER 000000001649277 AND PRTR FOUND ARCING AT PLYLON CONNECTOR PIN B. IDG DEFERRED ON L/P 8276350 BY DEN MX EFS. MAC METER INITIATED FOR     WITH VENDOR ID V9233664 FOUND ARCING AT PLYLON CONNECTOR PIN B. IDG DEFERRED ON L/P 8276350 BY DEN MX EFS.

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