Aviation Investigation A17O0264
Collision with terrain
Updated on 21 December 2017
The following update contains facts that the TSB has been able to validate at this time. It contains no conclusions about the factors that contributed to the occurrence. The final investigation report will include an analysis of all relevant factors and provide the Board's findings.
On 14 December 2017, a helicopter Aerospatiale AS 350 B-2, registered to Hydro One Networks Inc, transporting 3 linemen and 1 pilot, crashed near Tweed, Ontario. All four occupants sustained fatal injuries. The TSB is investigating.
What we know
Progress to date
In the coming days and weeks, the team will:
Map of the area
Peter Rowntree has 26 years of civil aviation experience. He joined the TSB in November 1997 as an investigator/technical specialist in the TSB Air Investigations Ontario Regional Office, in Richmond Hill, Ontario. Prior to joining the TSB, he worked as an aircraft maintenance supervisor in the arctic for a major Canadian air carrier. During that time, he maintained and supervised the maintaining of different aircraft types, from small aircraft to the larger commuter and jet aircraft. Since joining the TSB, Mr. Rowntree has participated in numerous investigations and several major TSB investigations. He has also assisted numerous foreign accident investigation agencies in their work abroad.
See more high resolution pictures on the TSB Flickr page.
Transportation Safety Board 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.
Aviation Safety Advisory A17O0264-D1-A1: Unsecured Cargo and Unrestrained Passengers in Helicopters
Read the aviation safety advisory
TSB will provide a news briefing on its investigation into the helicopter accident near Tweed, Ontario
Read the media advisory
TSB will provide a news briefing on its investigation into the helicopter crash that occurred near Tweed, Ontario
Read the media advisory
TSB deploys a team of investigators to a helicopter accident near Tweed, Ontarioa
Read the deployment notice
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