The Transportation Safety Board released their final report Thursday, April 26th on the crash that took the lives of former Alberta Premier Jim Prentice and Airdrie pilot Jim Kruk.

Transportation Safety Board Chair Kathy Fox says that Transport Canada failed to inspect the aircraft or the operator.

"The company required operational approval from Transport Canada to operate this aircraft as a single pilot, and we have no record of any request ever having been made from the company, either made or received by Transport Canada from the company. So they did not have the operational approval to fly that aircraft single pilot." 

The cause of the crash will never be known according to Fox but the board does have theories on what happened.

"It's extremely frustrating when at the end of 18 months we've come up with a likely scenario of spatial disorientation, and it is just that, a likely scenario." 

Fox says the hardest part is not having answers for the family members but believes that a flight data recorder would have made finding the cause of the crash much easier.

The plane had no flight data recorder nor was it required but Fox and the Transportation Safety Board are recommending they be mandatory for commercial and private business planes.

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