Incident Details
The aircraft experienced a loss of power during the initial climb from a touch-and-go landing. This resulted in a forced landing in a field, during which the aircraft nosed over.
Post-Accident Findings
A post-accident inspection of the engine controls found that the throttle lever could rotate on the throttle shaft. This was observed despite the attaching bolts being tight and secured with safety wiring. According to the inspection, this slippage could have allowed induction suction to close the throttle plate during the takeoff roll, even though the throttle control was in the full-open (in) position.
Conclusion
The investigation did not state a probable cause for the incident. The findings indicate a potential mechanical issue with the throttle assembly that may have contributed to the loss of power, but no definitive causal link was established in the provided source.