As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LT PROTECTIVE COVER CAME LOOSE AND PIVOTED FORWARD, TOWARD THE FIREWALL. THIS PROTECTIVE COVER IS LOCATED ON THE BOTTOM OF THE INSTRUMENT PANEL. THE PILOT PULLED THE PANEL (COVER) BACK TO THE POSITION IT WAS SUPPOSED TO BE IN AND SHORTED OUT THE SWITCHES JUST ABOVE IT. ALL AVIONICS WAS LOST EXCEPT FROM COMM 1 AND GPS. PROTECTIVE COVER WAS RE-INSTALLED AND SECURED TO AIRCRAFT.