As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING C CHECK MAINT FOUND ONE WIRE FROM HARNESS OF CONNECTOR 9811-P571 ENGINE START CONTROLPANEL ARCING ON THE BACKSHELL OF THE CVR CONNECTOR 23-71-P1. INSULATION IN AREA FOUND BURNT AND MELTED. FLEET CAMPAIGN INITIATED. INVESTIGATION REVEALED POSITIONING OF THE BACKSHELL TO HAVE CAUSED PROBLEM.