Incident Description
The pilot reported an altitude of about 150 to 200 feet when he executed an aileron input. The input was sufficiently forceful to cause fluid within the hopper tank to slosh. The airplane then experienced a shudder reminiscent of a stall. The pilot advanced the control stick forward to regain airspeed, but the shudder persisted. The aircraft commenced a left turn.
Pilot Actions
To counteract the turn, the pilot applied right aileron and right rudder. He then visually inspected the ailerons and noted that both were deflected upward. Upon reducing engine power, the left wing dropped. The pilot increased power and applied rudder inputs in an effort to retain control, yet the airplane maintained a shallow left turn. During a forced landing attempt in an open field, the pilot again reduced power, leading to a drop of the left wing and subsequent ground collision.
Examination Findings
Examination of the airplane after the event disclosed that the left aileron control rod end fitting had separated at the adjustment jam nut. The rod end had lost pliability due to rust and corrosion, which was ascribed to insufficient attention and lubrication.