What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Airman states he was conducting touch and goes. On final landing, the landing gear collapsed after touchdown. He noted that the landing gear handle was elevated to an angle approximately 30 degrees off the floor of the aircraft. (The Mooney landing gear is operated manually by a lever between the front seats. This lever is parallel to the floor, held in that position by a mechanical latch, when it is in the "down" position). Inspection of the latching mechanism after this event revealed no possibility of dislodging the handle when it was properly placed in the "down and locked" position. The airman failed to properly secure the handle in the "down and lock" position prior to landing.
As the FAA filed it
(-23) AIRMAN STATES HE WAS CONDUCTING TOUCH AND GOES. ON FINAL LANDING, THE LANDING GEAR COLLAPSED AFTER TOUCHDOWN. HE NOTED THAT THE LANDING GEAR HANDLE WAS ELEVATED TO AN ANGLE APPROXIMATELY 30 DEGREES OFF THE FLOOR OF THE AIRCRAFT. (THE MOONEY LANDING GEAR IS OPERATED MANUALLY BY A LEVER BETWEEN THE FRONT SEATS. THIS LEVER IS PARALLEL TO THE FLOOR, HELD IN THAT POSITION BY A MECHANICAL LATCH, WHEN IT IS IN THE "DOWN" POSITION). INSPECTION OF THE LATCHING MECHANISM AFTER THIS EVENT REVEALED NO POSSIBILITY OF DISLODGING THE HANDLE WHEN IT WAS PROPERLY PLACED IN THE "DOWN AND LOCKED" POSITION. THE AIRMAN FAILED TO PROPERLY SECURE THE HANDLE IN THE "DOWN AND LOCK" POSITION PRIOR TO LANDING.