Incident Overview
A certificated flight instructor was providing dual instruction under Title 14, CFR Part 91. During the landing sequence, the student pilot overcorrected with the rudder, causing the airplane to swerve to the right. The student then overcorrected again by applying full left rudder. As the instructor attempted to take control, the student applied full right rudder, and the airplane swerved to the right once more.
Instructor's Account
The instructor stated that the swerve to the right exceeded his ability to correct, because there are no brakes on the rudder pedals on the right side of the airplane. Subsequently, the airplane ground-looped to the right. During the ground loop, the left main landing gear collapsed, resulting in structural damage to the left wing and fuselage.
The instructor noted that there were no known mechanical problems with the airplane prior to the accident. In his written report to the NTSB, he wrote: "I should have recognized the student's over controlling sooner, and assumed control of the airplane prior to the ground-loop actually happening."
Damage Assessment
The accident caused the collapse of the left main landing gear and structural damage to the left wing and fuselage. No other damage or injuries were reported.