TSB says B.C. helicopter crashed in 2021 after rotors collided
Canada’s Transportation Safety Board says the fatal crash of a British Columbia logging helicopter was caused when the chopper’s rotor system broke up mid-flight.
A final report from the board says that on Oct. 4, 2021, the pilot of the Kaman K-1200 dropped off a load of logs into Jervis Inlet on B.C.’s south coast, turned around to pick up another load, then crashed into the water and sank.
The K-1200 has rotors on either side of the fuselage and the investigation found a blade on the left rotor had collided with a blade on the right rotor.
Investigators say a fracture in one of the aircraft’s joints led to a “fatigue crack” that progressed until a piece separated in flight, causing sudden vibrations and fluttering of the rotor blades, and failure of the left pylon structure, which allowed the blades to hit.