As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT ENGINE WAS BEING RUN AFTER LT MAGNETO CHECKS. ACFT WENT INTO FULL POWER AND ROLLED ON ITS WHEELS UNCONTROLLABLY TOWARDS THE DIRECTION OF A MAJOR AIRPORT CONSTRUCTION SITE CAUSING SEVERE UNREPAIRABLE DAMAGE TO BOTH WINGS. THE NOSE GEAR AND BOTH MAIN GEARS WERE COMPLETELY DESTROYED.