On August 27, 1992, 3 people were killed when a de Havilland Canada DHC-4 Caribou crashed immediately after takeoff at Gimli Industrial Park Airport.
Wikipedia describes the accident as follows:
Three people were killed on August 27, 1992 when a NewCal Aviation turbine-modified de Havilland Canada DHC-4 Caribou they were aboard crashed on the airfield during climb-out after a short take-off from the airport. The aircraft nosed sharply up, arced right and nosed into the ground. […] The cause was listed as failure to deactivate the plane's gust-lock control in the cockpit, […] [T]he Transportation Safety Board of Canada has no record of this incident.
The entire flight was captured on a video which has circulated on the Internet.
Was this accident ever officially investigated? If not, why not?