Incident Overview
On November 14, 2018, at 16:00 local time, a Piper PA-18/150 (registration HB-PRB) operated by Ascoavia SA was returning from a training flight at Locarno Airport (LSZL). The aircraft was on final approach to runway 26R with an instructor and a pilot on board.
Sequence of Events
Shortly before touchdown, the aircraft exhibited a sudden and pronounced roll to the right. The right main landing gear wheel struck the runway surface, causing the aircraft to veer approximately 90 degrees to the left. The impact dislodged the tire from its rim, leaving rim marks on the runway. The aircraft then bounced and executed a half-turn on the ground, during which the right wing tip made contact with the runway. The aircraft came to a stop facing east and subsequently taxied to the hangar under its own power.
Damage and Injuries
The right wing sustained structural deformations and the right landing gear was damaged. No injuries were reported among the two crew members.
Analysis and Conclusions
The investigation concluded that the unexpected contact of the right wheel with the ground surprised the crew, who were unable to counter the leftward deviation using the rudder. The accident was attributed to a loss of control of the tailwheel aircraft during the landing phase.