What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
5-29-25 PIC along with one passenger filed IFR flight plan from kcou to kphl departure time was 0945 am CDT. Planned altitude was 17,000 feet. At altitude in IMC conditions with some light ice for approximately 45 minutes. At approximately 1040 am CDT the pillot experienced loss of power and notified ATC, aircraft was clear of clouds and ice at this time. ATC provided coordinated for the closets airport 2H0. Pilot circled until pattern altitude and performed an emergency landing. During decent the engine was not producing power. At approximately 2000 feet the engine was completely shut down due to smoke and oil coming out of the engine cowl. Pilot successfully landed with no powerand coasted off the runway onto a taxiway without damage or injury. Upon visual inspection of the engine a hole approximatey 2.25" x 3.5" was discovered just aft of the #3 cylinder on the toop of the right-hand side of the engine case. A section of APPROXIMATELY2.5" from the camshaft was missing. It appears that the camshaft failed at this location. Some of the brass material was noted on the inside of the engine cowling. Engine was sent to Lycoming engines for teardown and evaluation on 06-18-2025 and is scheduled for teardown on 7-7-25. The pilot followed up with a report on 8-21-25 with a prelimenary report that a turbocharger failed at cruise flight. The failure of the turbocharger caused the engine oil to rapidly deplete and create a situation of oil starvation. The oil starvation resulted in one of the main rod bearings to seize and the rod broke off and hit the camshaft causing part of the camshaft to break off and create a hole in the top of the case. Final teardown report is pending.
As the FAA filed it
5-29-25 PIC ALONG WITH ONE PASSENGER FILED IFR FLIGHT PLAN FROM KCOU TO KPHL DEPARTURE TIME WAS 0945 AM CDT. PLANNED ALTITUDE WAS 17,000 FEET. AT ALTITUDE IN IMC CONDITIONS WITH SOME LIGHT ICE FOR APPROXIMATELY 45 MINUTES. AT APPROXIMATELY 1040 AM CDT THE PILLOT EXPERIENCED LOSS OF POWER AND NOTIFIED ATC, AIRCRAFT WAS CLEAR OF CLOUDS AND ICE AT THIS TIME. ATC PROVIDED COORDINATED FOR THE CLOSETS AIRPORT 2H0. PILOT CIRCLED UNTIL PATTERN ALTITUDE AND PERFORMED AN EMERGENCY LANDING. DURING DECENT THE ENGINE WAS NOT PRODUCING POWER. AT APPROXIMATELY 2000 FEET THE ENGINE WAS COMPLETELY SHUT DOWN DUE TO SMOKE AND OIL COMING OUT OF THE ENGINE COWL. PILOT SUCCESSFULLY LANDED WITH NO POWERAND COASTED OFF THE RUNWAY ONTO A TAXIWAY WITHOUT DAMAGE OR INJURY. UPON VISUAL INSPECTION OF THE ENGINE A HOLE APPROXIMATEY 2.25" X 3.5" WAS DISCOVERED JUST AFT OF THE #3 CYLINDER ON THE TOOP OF THE RIGHT-HAND SIDE OF THE ENGINE CASE. A SECTION OF APPROXIMATELY2.5" FROM THE CAMSHAFT WAS MISSING. IT APPEARS THAT THE CAMSHAFT FAILED AT THIS LOCATION. SOME OF THE BRASS MATERIAL WAS NOTED ON THE INSIDE OF THE ENGINE COWLING. ENGINE WAS SENT TO LYCOMING ENGINES FOR TEARDOWN AND EVALUATION ON 06-18-2025 AND IS SCHEDULED FOR TEARDOWN ON 7-7-25. THE PILOT FOLLOWED UP WITH A REPORT ON 8-21-25 WITH A PRELIMENARY REPORT THAT A TURBOCHARGER FAILED AT CRUISE FLIGHT. THE FAILURE OF THE TURBOCHARGER CAUSED THE ENGINE OIL TO RAPIDLY DEPLETE AND CREATE A SITUATION OF OIL STARVATION. THE OIL STARVATION RESULTED IN ONE OF THE MAIN ROD BEARINGS TO SEIZE AND THE ROD BROKE OFF AND HIT THE CAMSHAFT CAUSING PART OF THE CAMSHAFT TO BREAK OFF AND CREATE A HOLE IN THE TOP OF THE CASE. FINAL TEARDOWN REPORT IS PENDING.