What happened
During a landing on a grass airstrip, the pilot executed a three-point touchdown directed toward the east. Following the contact with the ground, the pilot attempted to manage the aircraft's pitch by pulling the control stick fully aft to prevent the tail from lifting. While the pilot was in the process of retracting the flaps, the tail rose once again. Despite the pilot ensuring that engine power was reduced and that no braking pressure was being applied, the aircraft's nose lifted. The aircraft eventually flipped onto its back over the nose while nearly at a standstill.
Findings
Post-accident inspections of the aircraft revealed that the brake discs were functional and the wheels could rotate without obstruction. However, the pilot noted that the T-handle brake lever appeared to be 3/4 engaged upon returning to the wreckage. Physical evidence at the scene included longitudinal grass abrasions on both tires. The landing area showed parallel tire tracks heading toward the north side of the airstrip, accompanied by eleven distinct slashes in the ground perpendicular to the tracks on the left side of the aircraft. No mechanical anomalies were found in the remaining aircraft systems. Wind conditions recorded shortly after the event were 010 degrees at 7 knots.