Incident Summary
A flight instructor and student pilot were practicing touch-and-go landings on runway 26. The pilot reported that the landing touchdown was straight, but during the landing roll, the aircraft began a turn to the left followed by a sharp turn to the right. The pilot attempted to add power to correct the deviation, but the aircraft veered toward a Cessna positioned on the runway 21 intersection. The aircraft crossed the grass between the runways, and before reaching runway 21, the left main landing gear collapsed.
Sequence of Events
The flight instructor stated that this was the first landing of the day and that they remained in the traffic pattern for repeated touch-and-go landings. After touchdown, directional control was lost during the roll, resulting in a ground loop. The aircraft's path took it across the grassy area separating the runways. The left gear collapsed as the aircraft traversed the grass, prior to intersecting runway 21.
Inspection Findings
Following the incident, an inspection of the aircraft revealed that the tailwheel steering assembly detent pin had separated. No further mechanical issues were reported.