Accident Summary
The accident occurred during landing when the aircraft drifted left after touchdown. The pilot reported that the propellers were moved to the beta range and corrective inputs were applied using the right spoiler and right rudder. However, the aircraft experienced an immediate dropping or turning motion to the left and subsequently struck a snowridge.
Pilot Statement
According to the pilot, both engines were feathered after the impact, and the aircraft slid along the snowridge. During the slide, the left wing tip made contact with the ground along with the left side of the fuselage.
Damage and Findings
The left main landing gear drag strut was sheared flush with the barrel, causing the gear to collapse. Metallurgical examination of the rod revealed that it had been overloaded at the time of failure. The tests further indicated that the rod had not been weakened by corrosion, cracks, or fatigue prior to the accident.