As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON A LOCAL FLIGHT WHEN ACFT LANDED, AT ROLL OUT, THE RT MLG COLLAPSED. THE ACFT WAS HOISTED FROM SLING POINT AND THE LANDING GEAR WAS LOCKED DOWN. THE CAUSE OF THE ACCIDENT WAS A HAMMER WAS LT IN THE GEAR WELL, GOT LODGED IN THE DRAG STRUT SCISSOR ASSY AND TRIPPED THE GEAR FROM THE DOWNLOCK. THERE WAS NO MECHANICAL FAILURE OF THE ACFT.