Primary finding
Probable cause
A loss of control for an undetermined reason(s).
Investigator assessment
Analysis narrative
Winesses had observed the airplane making high-speed taxi runs before departure. After lift-off, at 100-150 ft agl, the airplane banked sharply and nosed over into the ground in a near vertical attitude. Both engines sounded normal. No pre-impact failure/malfunction was found.
Source record
Factual narrative
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