What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) #4 Rod bushing eroded away, clearance allowed shock loads to damage the piston. Piston fractured, released wrist pin. Rod and wrist pin cycled in cylinder without sufficient clearance. Pushed cylinder loose from case. Case fractured, loose rod damaged case and pieces locked up the engine. Aircraft impacted the ground in a right wing low attitude.
As the FAA filed it
(-23) #4 ROD BUSHING ERODED AWAY, CLEARANCE ALLOWED SHOCK LOADS TO DAMAGE THE PISTON. PISTON FRACTURED, RELEASED WRIST PIN. ROD AND WRIST PIN CYCLED IN CYLINDER WITHOUT SUFFICIENT CLEARANCE. PUSHED CYLINDER LOOSE FROM CASE. CASE FRACTURED, LOOSE ROD DAMAGED CASE AND PIECES LOCKED UP THE ENGINE. AIRCRAFT IMPACTED THE GROUND IN A RIGHT WING LOW ATTITUDE.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.