TSB has completed this investigation. The report was published on 15 July 2026.
Loss of control and impact with runway
Perimeter Aviation LP
Fairchild SA227-DC Metro 23, C-GJVW
Detour Lake Aerodrome (CDT9), Ontario
The occurrence
On 07 September 2023, the Fairchild SA227-DC Metro 23 aircraft (registration C-GJVW, serial number DC-872B) was being operated by Perimeter Aviation LP as Bearskin Airlines flight 4330, on an instrument flight rules flight from Toronto/Lester B. Pearson International Airport (CYYZ) to Detour Lake Aerodrome (CDT9), with a stop at North Bay Airport (CYYB), all in Ontario. There were 2 flight crew members and 8 passengers on board. At 1005 Eastern Daylight Time, when the aircraft was on short final to Runway 10 at CDT9, it impacted the runway in a nose-down, right-wing-low attitude. The nose landing gear and right main landing gear collapsed, both propellers struck the runway, and the aircraft skidded to the right, leaving the runway surface and coming to rest in an upright position at the bottom of an embankment, approximately 47 m (154 feet) laterally from the runway edge. The flight crew and passengers used the main cabin door and the over-wing exits to egress from the aircraft. Three passengers and 1 flight crew member received minor injuries. The aircraft was substantially damaged. The emergency locator transmitter did not activate.
Media materials
Investigation information
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.