Incident
A commercial pilot was conducting his first spraying pass of the day when the agricultural airplane struck and damaged a center pivot irrigation system. The impact caused the right main landing gear and tail wheel to separate from the airplane. The aircraft immediately began a descending bank to the right.
Control Difficulties
The pilot reported that the right aileron was jammed in the full up position and that control stick movements had no effect on the right aileron. He was able to use full power, full left aileron, and full left rudder to regain partial control of the aircraft.
Emergency Landing
Regaining partial control, the pilot returned to the airport to perform an emergency landing. As the airplane touched down, the left main landing gear separated. The airplane came to rest upright. Substantial damage was sustained to the fuselage and flight controls.
Pilot Report
The pilot reported that there were no mechanical anomalies prior to impact with the irrigation system. He also noted that his forward vision was partially obscured by chemical spray on the windshield.