As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TROUBLESHOOTING OF WIRES IN VM1000 SYSTEM, WIRE J4-13, VOLTAGE SENSE, CAME LOOSE AND SHORTED TO GROUND. THIS WIRE IS CONNECTED DIRECTLY TO BUS WITH NO CIRCUIT PROTECTION. LATER MODEL AIRCRAFT DO INCORPORATE CIRCUIT PROTECTION IAW MFG. RECOMMEND EARLIER AIRCRAFT BE RETRO-FITTED WITH NEW DESIGN. WIRE IS HELD IN WITH SCREW CLAMP TYPE TERMINAL. IF THIS HAD COME LOOSE IN FLIGHT AND IN-FLIGHT FIRE COULD HAVE OCCURRED. (K)