TSB has completed this investigation. The report was published on 3 June 2025.
Collision with terrain
Government of Canada, Royal Canadian Mounted Police
Pilatus Aircraft Ltd. PC-12/47E, C-GMPX
Whitehorse/Erik Nielsen International Airport, Yukon
The occurrence
At 1134 Mountain Standard Time on 17 April 2023, the Government of Canada, Royal Canadian Mounted Police Pilatus Aircraft Ltd. PC-12/47E (registration C-GMPX, serial number 1017) departed Whitehorse/Erik Nielsen International Airport (CYXY), Yukon, on an instrument flight rules flight to Yellowknife Airport (CYZF), Northwest Territories. The pilot was the sole occupant. Shortly after the aircraft lifted off from Runway 32L, its stall warning system activated, triggering an aural “STALL” warning and the activation of the stick shaker. The pilot informed the tower controller of the intention to return for landing. At 1138, while the pilot was visually manoeuvring to land on Runway 32L, the aircraft impacted the terrain approximately 520 feet west-southwest of the centre of the displaced threshold, in a right-wing-low attitude. The aircraft subsequently hit a pile of millings with its left wing, rolled onto its left side, and slid approximately 130 feet before coming to rest on an airport service road. The pilot, who was seriously injured, exited the aircraft through the emergency exit with assistance from aircraft rescue and firefighting personnel, who arrived within minutes of the accident. An emergency locator transmitter signal was received by the search and rescue satellite system. The aircraft was destroyed; there was no post-impact fire.
Media materials
Investigation information
A23W0040
Collision with terrain
Government of Canada, Royal Canadian Mounted Police
Pilatus Aircraft Ltd. PC-12/47E, C-GMPX
Whitehorse/Erik Nielsen International Airport, Yukon
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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.