Aviation Investigation A17Q0030

Mid-air collision

The occurrence

On March 17, 2017, two Cessna 152 from Cargair Flying School, with a pilot on board each aircraft, were operating training flights from the St-Hubert airport, Quebec. During the flight, both aircraft collided and crashed at the shopping mall in St-Bruno, Quebec. One pilot suffered fatal injuries and the other pilot was seriously injured.

Map of the area


Photo of Isabelle Langevin

Isabelle Langevin joined the Air Investigation Branch at the TSB regional office in Dorval, Quebec as an Investigator Operations (Air) in September 2015. During her career, Isabelle worked as a flight instructor before working as a pilot mainly in Nunavik (Northern Quebec) flying DHC- 6, King Air and Dash 8. In 2006, she joined Nav Canada as an instrument procedures design specialist and as principal analyst. Since 2008, she held various positions at Transport Canada including that of Technical Team Lead, Flight Operations. Isabelle has a Bachelors degree in Political Science.


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Link to the TSB Flickr page

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Transportation Safety Board investigation process

There are 3 phases to a TSB investigation:

  1. Field phase: a team of investigators examines the occurrence site and wreckage, interviews witnesses and collects pertinent information.
  2. Examination and analysis phase: the TSB reviews pertinent records, tests components of the wreckage in the lab, determines the sequence of events and identifies safety deficiencies. When safety deficiencies are suspected or confirmed, the TSB advises the appropriate authority without waiting until publication of the final report.
  3. Report phase: a confidential draft report is approved by the Board and sent to persons and corporations who are directly concerned by the report. They then have the opportunity to dispute or correct information they believe to be incorrect. The Board considers all representations before approving the final report, which is subsequently released to the public.

For more information, see our Investigation process page.


Deployment notices

TSB deploys a team of investigators to Saint-Bruno-de-Montarville, Quebec, following mid-air collision between two aircraft
Read the deployment notice