Incident Overview
An aerial application flight encountered a mechanical failure while on short final approach. The pilot attempted to reduce airspeed by pulling the throttle lever, but the lever broke at the power control quadrant.
Sequence of Events
The pilot continued the approach after the throttle lever failure. After the aircraft had traveled approximately half the length of the runway, the pilot turned the magneto switch off. The aircraft ultimately touched down near obstructions and occupied vehicles at the departure end of the runway. At that point, the pilot intentionally pushed the control stick forward, causing the aircraft to nose over. The aircraft came to rest inverted.
Conclusion
The aircraft came to rest inverted after the pilot intentionally nosed it over to avoid obstructions and occupied vehicles following a throttle lever failure on short final.