NTSB Identification: CHI93LA095.
The docket is stored on NTSB microfiche number 52107.
Accident occurred Thursday, February 25, 1993 in PLYMOUTH, MI
Probable Cause Approval Date: 11/03/1993
Aircraft: CESSNA 150M, registration: N9297U
Injuries: 1 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
THE STUDENT PILOT REPORTED THE AIRPLANE SUDDENLY VEERED LEFT DURING THE LANDING ROLL, CONTINUED OFF THE RUNWAY AND STRUCK A SNOW BANK. HE BELIEVES THE LOSS OF CONTROL WAS CAUSED BY THE FRACTURE OF THE STEERING ARM ROD END BOLT. A METALLURGICAL EXAMINATION OF THE FRACTURED ROD END DISCLOSED THE FRACTURE WAS CAUSED BY AN OVERLOAD IN TENSION, AND THAT THERE WAS NO PREEXISTING ANOMALY OR FATIGUE EVIDENT IN THE ROD END. EXCESS TENSION ON THE ROD END CAN RESULT IF THE NOSEWHEEL IS FORCED BEYOND THE LIMITS OF ITS NORMAL TRAVEL. FAA INSPECTORS AT THE ACCIDENT SITE OBSERVED WHAT THEY DESCRIBED AS NOSEWHEEL SCRUB MARKS ON THE RUNWAY FROM THE ACCIDENT AIRPLANE.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE STUDENT PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL.
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