CASPER, WY, USA
N9732M
MOONEY M20F
THE PILOT MADE A FORCED LANDING AFTER THE ENGINE FAILED. INVESTIGATION REVEALED THE NUMBER 2 CYLINDER CONNECTING ROD LOWER YOKE WAS FRACTURED. METALLURGICAL EXAMINATION OF THE ROD REVEALED ROTATIONAL POLISHING AND GALLED SPOTS ON THE INSIDE YOKE SURFACES AND A FATIGUE FRACTURE OF THE YOKE THAT ORIGINATED AT THE INSIDE SURFACE.
THE LOSS OF ENGINE POWER DUE TO FATIGUE FRACTURE OF THE NUMBER 2 CYLINDER CONNECTING ROD. FACTORS RELATED TO THE ACCIDENT WERE: ROUGH AND UNEVEN TERRAIN AT THE ACCIDENT SITE AND THE LACK OF SUITABLE TERRAIN FOR FORCED LANDING.
Source: NTSB Aviation Accident Database
Aviation Accidents App
In-Depth Access to Aviation Accident Reports
