Review can’t pinpoint why flight school plane lost control, crashed near Calgary

Click to play video: 'Investigation concludes into MRU plane crash that killed 2 Calgary flight instructors'
Investigation concludes into MRU plane crash that killed 2 Calgary flight instructors
WATCH: Nearly one year later to the date, the Transportation Safety Board has released findings of an investigation into a plane crash that claimed the lives of two MRU instructors. Jill Croteau reports – Feb 22, 2018

The Transportation Safety Board says it doesn’t know what caused a plane operated by Mount Royal University’s flight school to lose control and crash northwest of Calgary.

The crash a year ago killed pilot Jeffrey Bird and co-pilot Reynold Johnson, who were both instructors with the program.

READ MORE: Funeral held for Mount Royal University instructor killed in plane crash near Calgary

A safety board investigation report says that for unknown reasons the aircraft started spinning during an exercise about a half hour after it took off from the Calgary Springbank Airport.

Bird and Johnson managed to get the plane out of the spin, but by then there was not enough altitude to recover from the ensuing dive.

READ MORE: Flight instructors killed in plane crash near Calgary were experienced pilots: Mount Royal University president

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The board says Mount Royal took a number of safety actions after the crash, acquired different aircraft for multi-engine training and revised operating procedures.

It also clarified roles for when two instructors are on staff training flights together.

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