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

South Surrey woman promotes exercise to help fight Parkinson’s disease

‘This keeps me strong’ says Liz Holroyd Campbell, organizer of the 2019 Parkinson Superwalk

Four Terry Fox Runs planned for Surrey

Events to take place throughout city on Sept. 15

VIDEO: Young balance-bikers race through Surrey’s Civic Plaza at Strider Cup

The course has several obstacles including ‘Mount Scary’ and the ‘Noodle Monster’

White Rock Beer For The Pier to go on sale early this week

Restaurants, bars and liquor stores from Vancouver to Chilliwack will sell new brew

QUIZ: How much do you remember about Woodstock?

Weekend music festival in Bethel, New York, was held 50 years ago

Advocates ‘internationalize’ the fight to free Raif Badawi from Saudi prison

Raif Badawi was arrested on June 17, 2012, and was later sentenced to 1,000 lashes and 10 years in jail for his online criticism of Saudi clerics

RCMP, search crews hunt for 4-year-old boy missing near Mackenzie

George went missing early Saturday afternoon

Canadian entrepreneurs turning beer byproduct into bread, cookies and profits

Some breweries turn to entrepreneurs looking to turn spent grain into treats for people and their pets

Canada ‘disappointed’ terror suspect’s British citizenship revoked

Jack Letts, who was dubbed “Jihadi Jack” by the U.K. media, has been detained in a Kurdish prison for about two years

Chrystia Freeland condemns violence in Hong Kong, backs right to peaceful assembly

There have been months of protests in the semi-autonomous region

B.C. VIEWS: Log exports and my other errors so far in 2019

Plastic bags, legislature overspending turn out differently

‘It’s just the freedom:’ Paralyzed Broncos player pursuing life on the water

The former Humboldt Broncos goaltender, who started in the net when he was nine, was paralyzed last year

Canadians killed in Afghanistan honoured during emotional dedication ceremony

One-hundred-fifty-eight Canadian soldiers died during the mission

Most Read

l -->