NTSB Identification: FTW96LA272.
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Accident occurred Saturday, June 22, 1996 in HOLYOKE, CO
Probable Cause Approval Date: 09/24/1996
Aircraft: Grumman-Schweizer G-164A, registration: N4698
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 pilot stated that shortly after takeoff the engine began to vibrate and the control stick shook. He initiated a shallow left turn, and the engine began losing power. As he rolled out of the turn the engine quit. He made a forced landing in a soft field and the airplane nosed over. During the postaccident engine examination, ferrous metal was found in the oil sump. The filters and screens, however, were clear of debris. A spokesman for the disassembly facility said there was evidence that the main bearing had failed, causing the engine to seize.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: the total failure of the engine main bearing. A factor was the soft terrain condition on which the forced landing was made. Full narrative available
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