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

CARE column: Cold winter season terrifying for stray cats

Kittens Starsky and Hutch will have a warm foster home this winter.

Tofino’s top engineer leaves district amidst massive sewage treatment project

District office currently working through $60 million sewage treatment plant

VIDEO: Remembrance Day in Ucluelet

Town gathers at Army, Navy and Air Force Veterans Club for Remembrance Day ceremony.

Remembrance Day ceremonies in Tofino and Ucluelet

The Tofino Legion and Ucluelet Army, Navy and Air Force Veterans Club will host ceremonies today.

West Coast residents to decide on BC Transit service between Tofino and Ucluelet

Alberni Clayoquot Regional District must collect $550,000 a year from participating communities.

VIDEO: Canadian allergists’ group wants Benadryl behind the counter due to side effects

Some doctors say the medication is over-used because of its easy availability

Yelling at your dog might hurt its long-term mental health: study

Researchers find dogs trained using negative reinforcement are more ‘pessimistic’

Vancouver Island soap company releases Lucky Lager beer soap

Beer-infused olive oil soap comes out just in time for holiday shopping

Jagmeet Singh says he’ll vote against throne speech if NDP requests not met

Singh is to meet with Prime Minister Justin Trudeau on Thursday

Community uses loophole to paint 16 rainbow crosswalks after B.C. council says no

So far 11 rainbows are painted and five planned, all since council denied the first proposal in September

Workers’ camp at LNG facility in Kitimat takes shape

Extensive worker camp now being assembled

Former B.C. youth pastor guilty on one of five sexual assault allegations

Judge cites reasonable doubt in finding Cloverdale couple not guilty of majority of charges

238 and counting: Vancouver gelato shop sets Guinness World record for most flavours

Vince Misceo has come up with 588 different flavours over the decades

Killer who fled to Taiwan day after shooting B.C. man over $80 sentenced 13 years later

The sentence comes 13 years after Shaoxin Zhang, 19, was killed in a Burnaby parking lot

Most Read