What happened
The pilot was conducting agricultural spraying operations over a field when the engine experienced an unexpected mechanical issue. In response to the developing problem, the pilot initiated a precautionary landing in an adjacent cow pasture. During the touchdown phase, the aircraft's left main landing gear struck a hole in the ground, resulting in structural collapse of that gear assembly.
The investigation
Following the accident, investigators conducted a post-crash examination of the aircraft's engine components. The inspection revealed that the linkage on the throttle body had become loose. This mechanical failure was identified as the direct cause of the partial loss of power experienced by the pilot prior to landing.
Findings
The sequence of events indicates that the Piper PA-25 Pawnee encountered a critical engine malfunction during low-altitude operations. The partial loss of power forced an emergency landing in terrain not suited for such maneuvers, leading to gear failure upon impact with ground irregularities.
Safety message
Regular inspection of throttle linkages and control systems is essential to prevent unexpected power reductions during critical flight phases.