What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The pilot stated that the flight was the second flight of the day. Normal start up and run up for runway 18. Takeoff power was normal, the only deviations were cylinder #8 was indicating 425 degrees on climb out and the oil temperature on the jpi showed high while the analog showed normal. The other happening was the throttle veneer was not working properly, when the pilot let go of the throttle, the engine went to idle.
Pilot made a left crosswind departure to fly a bit to diagnose issues, maybe for 20 minutes. Pilot decided to return to the field entering on a 45 to the downwind for runway 18, lowered flaps to ½ while the throttle went to idle. Jpi was flashing both #8 cylinder and oil temperature as “high” even while at idle. Turned base, dropped gear to what I envisioned as a “green” light. Turned to final and added full flaps while engine again dropped to idle.
Pilot crossed the numbers at a standard 90 mph, slowed to 85 mph, normal feeling touchdown to gear collapsing on the runway at about 65 mph, normal emergency shutdown and exit aircraft to side of runway 18. Runway 18 witness marks shows propeller contact and no additional marks for several hundred feet, it appears the aircraft bounced.
As the FAA filed it
THE PILOT STATED THAT THE FLIGHT WAS THE SECOND FLIGHT OF THE DAY. NORMAL START UP AND RUN UP FOR RUNWAY 18. TAKEOFF POWER WAS NORMAL, THE ONLY DEVIATIONS WERE CYLINDER #8 WAS INDICATING 425 DEGREES ON CLIMB OUT AND THE OIL TEMPERATURE ON THE JPI SHOWED HIGH WHILE THE ANALOG SHOWED NORMAL. THE OTHER HAPPENING WAS THE THROTTLE VENEER WAS NOT WORKING PROPERLY, WHEN THE PILOT LET GO OF THE THROTTLE, THE ENGINE WENT TO IDLE.
PILOT MADE A LEFT CROSSWIND DEPARTURE TO FLY A BIT TO DIAGNOSE ISSUES, MAYBE FOR 20 MINUTES. PILOT DECIDED TO RETURN TO THE FIELD ENTERING ON A 45 TO THE DOWNWIND FOR RUNWAY 18, LOWERED FLAPS TO ½ WHILE THE THROTTLE WENT TO IDLE. JPI WAS FLASHING BOTH #8 CYLINDER AND OIL TEMPERATURE AS “HIGH” EVEN WHILE AT IDLE. TURNED BASE, DROPPED GEAR TO WHAT I ENVISIONED AS A “GREEN” LIGHT. TURNED TO FINAL AND ADDED FULL FLAPS WHILE ENGINE AGAIN DROPPED TO IDLE.
PILOT CROSSED THE NUMBERS AT A STANDARD 90 MPH, SLOWED TO 85 MPH, NORMAL FEELING TOUCHDOWN TO GEAR COLLAPSING ON THE RUNWAY AT ABOUT 65 MPH, NORMAL EMERGENCY SHUTDOWN AND EXIT AIRCRAFT TO SIDE OF RUNWAY 18. RUNWAY 18 WITNESS MARKS SHOWS PROPELLER CONTACT AND NO ADDITIONAL MARKS FOR SEVERAL HUNDRED FEET, IT APPEARS THE AIRCRAFT BOUNCED.