What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Experienced an uncontained catastrophic engine failure and diverted to 20M then landed on runway 36 without further incident. Parts of engine blew off. POB: 2, injuries: none, damage: extent unknown.
Pilot indicated this was an instructional flight. The student was doing some pattern work. After the 3rd touch and go, during the climbout, they heard a loud noise and the aircraft lost significant power. The instructor took the controls and landed the aircraft. Upon inspection it was found that the engine had lost all of it's oil. The flight was 0.9 hours according to the hobbs meter. The preflight oil check showed 6.5 quarts of oil on the dipstick. It appears that the #6 cylinder conecting rod failed due to loss of oil and knocked a large hole in the top of the crankcase. It is suspected that the recently installed stc'd oil filter kit installed and found to be loose may have been the cause of the oil loss. But no proof to determine the cause.
As the FAA filed it
EXPERIENCED AN UNCONTAINED CATASTROPHIC ENGINE FAILURE AND DIVERTED TO 20M THEN LANDED ON RUNWAY 36 WITHOUT FURTHER INCIDENT. PARTS OF ENGINE BLEW OFF. POB: 2, INJURIES: NONE, DAMAGE: EXTENT UNKNOWN.
PILOT INDICATED THIS WAS AN INSTRUCTIONAL FLIGHT. THE STUDENT WAS DOING SOME PATTERN WORK. AFTER THE 3RD TOUCH AND GO, DURING THE CLIMBOUT, THEY HEARD A LOUD NOISE AND THE AIRCRAFT LOST SIGNIFICANT POWER. THE INSTRUCTOR TOOK THE CONTROLS AND LANDED THE AIRCRAFT. UPON INSPECTION IT WAS FOUND THAT THE ENGINE HAD LOST ALL OF IT'S OIL. THE FLIGHT WAS 0.9 HOURS ACCORDING TO THE HOBBS METER. THE PREFLIGHT OIL CHECK SHOWED 6.5 QUARTS OF OIL ON THE DIPSTICK. IT APPEARS THAT THE #6 CYLINDER CONECTING ROD FAILED DUE TO LOSS OF OIL AND KNOCKED A LARGE HOLE IN THE TOP OF THE CRANKCASE. IT IS SUSPECTED THAT THE RECENTLY INSTALLED STC'D OIL FILTER KIT INSTALLED AND FOUND TO BE LOOSE MAY HAVE BEEN THE CAUSE OF THE OIL LOSS. BUT NO PROOF TO DETERMINE THE CAUSE.