2 fatalities

Fatal Collision Involving a Departing Aircraft and a Parked Bell 206 at Thistle Lake (C-FWAB)

Thistle Lake, CanadaTakeoff (climb)

On June 21, 1990, a De Havilland DHC-6 Twin Otter (registration C-FWAB) operated by Ptarmigan Airways was involved in an aviation accident near Thistle Lake, Canada during takeoff. 2 people were killed. Investigators recorded the probable cause as: The reason of the loss of control could not be determined. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Source recordUpdated 2026-09-03Data APIEditorial standards

An aircraft struck a parked Bell 206 shortly after departing Thistle Lake, resulting in a crash and the deaths of both pilots. The official investigation could not determine the cause of the loss of control.

Incident Overview and Immediate Sequence of Events An aircraft departed Thistle Lake after completing a cargo delivery for local mine workers. During the initial climb, at an altitude of approximately 10 feet, the aircraft banked to the right and collided with the rotor of a Bell 206 that was parked on the ground. The impact caused the departing aircraft to become uncontrollable. It continued forward for a few dozen meters before crashing and igniting. ## Casualties and Official Findings Both pilots aboard the aircraft were killed in the accident. The official investigation concluded that the reason for the loss of control could not be determined. No specific aircraft type, registration, operator, or date was provided in the source material.

Probable cause

The reason of the loss of control could not be determined.

Frequently asked questions

What happened in the 21 Jun 1990 De Havilland DHC-6 Twin Otter accident near Thistle Lake, Canada?

An aircraft struck a parked Bell 206 shortly after departing Thistle Lake, resulting in a crash and the deaths of both pilots. The official investigation could not determine the cause of the loss of control.

Were there any fatalities in the 21 Jun 1990 De Havilland DHC-6 Twin Otter accident?

The accident was fatal, resulting in 2 fatalities.

What aircraft was involved and where did it happen?

The accident on 21 Jun 1990 involved a De Havilland DHC-6 Twin Otter, registration C-FWAB, operated by Ptarmigan Airways, at Thistle Lake, Canada.

What was the probable cause of the accident?

The reason of the loss of control could not be determined.