Transportation Safety Board of Canada is an independent agency that investigates marine, pipeline, railway and aviation transportation accidents. (TSB/Flickr)

Lack of oxygen likely caused fatal plane crash near Calgary, says TSB report

The pilot flying the Piper PA-31 Navajo was headed to the Springbank Airport

A lack of oxygen likely played a role in a plane crash southwest of Calgary that killed two people, an investigation by the Transportation Safety Board of Canada found.

The board said in a report released Thursday that hypoxia, or in-flight oxygen deprivation, caused the pilot to lose control before the plane crashed into rugged terrain in the Kananaskis area of Alberta on Aug. 1, 2018.

The pilot flying the Piper PA-31 Navajo was headed to the Springbank Airport near Calgary with a survey technician.

The aircraft’s right engine began operating at a significantly lower power setting than the left engine when the pilot was approaching the airport, said the board.

Investigators could not determine why this happened.

READ MORE: Trudeau praises actions of coast guard in help with deadly float plane crash

“About 90 seconds later, at approximately 13,500 feet (4,115 metres), the aircraft departed controlled flight,” the report said. ”The aircraft collided with terrain near the summit of Mount Rae.”

Although a portable oxygen system was available on the plane, the pilot was not continuously using it in the high altitude, which the board said is required by regulation.

The board also found that flight crews with Aries Aviation, the company that owned and operated the aircraft, only undergo theoretical hypoxia training.

Aries is not required by law to provide practical training and the report noted there is a risk pilots will not recognize early symptoms in higher altitudes.

“Although certain hypoxia effects may become more noticeable than others as an aircraft ascends, associated changes to a pilot’s sense of self, motivation, willpower and wellness often overshadow the ability to identify performance degradation in themselves,” the report said.

“In fact, a pilot who is in a hypoxic state may actually experience euphoria. Even sensory effects, such as darkening of the visual field, may become noticeable to individuals only after they begin … using oxygen or descending to a lower altitude.”

The aircraft was not required to have a flight data recorder or cockpit voice recorder, the board said.

“However, the aircraft was equipped with a flight data monitoring system that included a camera,” the board said in a statement Tuesday.

“This system provided significant information to help TSB investigators better understand the underlying factors that contributed to the accident.”

Daniela Germano, The Canadian Press

Like us on Facebook and follow us on Twitter.

Just Posted

Lacombe Chamber annual Scholarship winners unveiled

Successful applicants for 2019 are Bryna Figursky and Aden Grose

Lacombe’s Morrison House Cafe to close Aug. 30

Morrison House recently celebrated 100 years in Lacombe

UPDATE: Four Lacombe athletes named to Team Canada Ringette team

Team Canada will compete at World Championships in November

City of Lacombe council highlights – Aug. 12

Next scheduled council meeting is Sept. 9

WATCH: Lacombe Days parade rolls through city

Hundreds turn out for annual tradition

First Nations women finally to be treated equally under Indian Act: Bennett

Canadian Feminist Alliance for International Action thanked the feds

‘Easy Rider’ star Peter Fonda dies at 79

Actor and writer was nominated for an Oscar for co-writing the 1969 psychedelic road trip movie

What could be next? Five questions in the SNC-Lavalin saga

Will police lay charges? Will report resonate with voters? Will Jody Wilson-Raybould get re-elected?

Alberta government strikes panel to advise on wage cut for alcohol servers

Panel is tasked with consolidating existing studies on the effects of a minimum-wage increase

‘Tips on steroids:’ Social media both a help, hurdle for Canadian police investigations

More than 1,000 tips were received by police in the hunt for fugitives Kam McLeod, Bryer Schmegelsky

B.C. homicide victim’s brother says he may never know why she was killed

Stetson Deese the family is preparing for the possibility they’ll be left in the dark on motive

Alleged child porn upload to internet leads to charges against Edmonton doctor

Police say the 47-year-old man was arrested Aug. 11 after an investigation

Alberta, Saskatchewan say they have no plans to put carbon tax stickers on pumps

The federal government has imposed a carbon tax on Ontario, Manitoba, Saskatchewan and New Brunswick

Most Read