As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS PARKED IN HANGAR, NO MAINTENANCE BEING PERFORMED. UPON 1ST INVESTIGATION LT MAIN LANDING GEAR STRUT WAS BOTTOMED. UPON FURTHER INVESTIGATION UPPER STRUT CAP SNAP RING HAD COME LOOSE AND CAP EJECTED THROUGH UPPER WING SKIN CAUSING A 3 INCH HOLE IN UPPER WING SKIN. NO OTHER DAMAGE NOTED ON AIRCRAFT. UPON FURTHER INSPECTION NO SIGN OF COMPONENT FAILURE TO LEFT MAIN LANDING GEAR STRUT NOTED.