TSB has completed this investigation. The report was published on 28 January 2026.
Lateral runway excursion
Propair Inc.
Beech King Air A100, C-GJJF
Wemindji Airport (CYNC), Quebec
The occurrence
On 04 November 2023, the Beech King Air A100 aircraft (registration C-GJJF, serial number B-123), operated by Propair Inc., was conducting a medical evacuation flight under instrument flight rules, from Rouyn-Noranda Airport (CYUY), Quebec, to Wemindji Airport (CYNC), Quebec, with 2 pilots and 3 mission personnel on board. At 0227 Eastern Daylight Time, the aircraft touched down slightly left of the centreline of Runway 28 at CYNC. The left propeller and main landing gear then struck a snow windrow that extended along the entire length of the runway. The aircraft exited to the left of the runway and came to rest in the snow approximately 45 feet from the edge of the runway. One member of the mission personnel received minor injuries. The aircraft’s left propeller and engine were damaged, as were the flaps on both sides.
Investigation information
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Class of investigation
This is a class 3 investigation. These investigations analyze a small number of safety issues, and may result in recommendations. Class 3 investigations are generally completed within 450 days. For more information, see the Policy on Occurrence Classification.
TSB investigation process
There are 3 phases to a TSB investigation
- Field phase: a team of investigators examines the occurrence site and wreckage, interviews witnesses and collects pertinent information.
- 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.
- 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.
The TSB is an independent agency that investigates air, marine, pipeline, and rail transportation occurrences. Its sole aim is the advancement of transportation safety. It is not the function of the Board to assign fault or determine civil or criminal liability.