The Transportation Safety Board has released its report into a fatal plane crash in Saskatoon in April 2011.

An on-board technician was killed when the small plane slammed into a sound-wall along Wanuskewin Road. The two pilots were rescued by witnesses and were able to walk away from the disaster.

According to the Transportation Safety Board’s report, mechanical failure in one engine and a lack of fuel in a second led to the crash. The report says the plane lost power during a survey flight when an internal component in the right engine failed.

The crew tried to get to the airport, but because of the left engine wasn’t getting enough fuel, it also lost power.

The arial survey aircraft was operated by Furgo Aviation Canada.