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

Ucluelet talks pot shops

Two applications are being considered as cannabis retailers.

Ahousaht students kick off school year with inspirational field-trip

Maaqtusiis kicks off year with two-night stay at Cedar Coast Field Station on Vargas Island

Surf’s Up event in Tofino offers a wave of positivity for families living with autism

“There’s no other opportunity like this for kids like Rylan.”

2019 FEDERAL ELECTION: Meet the candidates for the Courtenay-Alberni riding

In an effort to inform the Courtenay-Alberni riding constituents, we have supplied… Continue reading

Crew keeps worried mother at bay while rescuing entangled baby humpback near Ucluelet

“These animals are massive, they’re powerful and it really is dangerous.”

‘It’s almost surreal’: B.C. fire chief, sidekick Sammy recap rescue mission in Bahamas

Chief Larry Watkinson and Sam the disaster dog spent 8 days assisting a search and rescue team

Kamloops high school evacuated after receiving threat

Police have not released any further details into what the threat includes

Woman held at gunpoint during carjacking in UBC parkade

University RCMP say the vehicle is still missing, and two suspects are at large

VIDEO: Angry B.C. cyclist starts shaming dangerous drivers online

‘You motorists deserve all your costs and misery’

‘Time to take action:’ Children advocates call for national youth suicide strategy

Council wants Ottawa to make reporting of suicides and attempted suicides mandatory for data collection

Canadian inflation decelerates to 1.9% as gas prices weaken

August was the sixth straight month that price growth was 1.9 per cent or higher

Man who crushed Nanaimo RCMP cars with stolen truck gets more jail time

Majore Jackson, 34, sentenced to two more years in jail in provincial court in Nanaimo

Defense says burden of proof not met in double murder case against Victoria father

Closing statements begin in trial for man accused of killing daughters Christmas 2017

B.C. dog breeder banned again after 46 dogs seized

The SPCA seized the animals from Terry Baker, 66, in February 2018

Most Read