Air transportation safety investigation A18P0108

Update: The TSB has completed this investigation. The report was published on 13 February 2019.

Table of contents

Loss of control and collision with water

Fort Langley Air Ltd.
Cessna 180H, C-FCDQ
Tyaughton Lake, British Columbia

View final report

The occurrence

On , a Cessna 180H aircraft, operated by Fort Langley Air, was conducting a local flight from Tyaughton Lake, British Columbia, with three persons on board. Shortly after take-off, the instructor pilot seated in the back observed a fuel leak from the left wing. The instructor pilot informed the pilot about the leak, instructed him to turn back and to land on the lake. The pilot reduced the airspeed and made a right turn. Shortly after the turn was initiated, the aircraft experienced a loss of control and crashed in the water. The instructor pilot and the passenger were fatally injured and the pilot was seriously injured. The emergency locator transmitter did not transmit a signal.

Media materials

News release


Investigation report: August 2018 loss of control and collision with water in Tyaughton Lake, British Columbia
Read the news release

Deployment notice


TSB deploys a team of investigators to a floatplane accident on Tyaughton Lake, British Columbia

The Transportation Safety Board of Canada (TSB) is deploying a team of investigators to a floatplane accident on Tyaughton Lake, British Columbia. The TSB will gather information and assess the occurrence.

Investigation information

Map showing the location of the occurrence


Photo of Chris Johnston

Chris Johnston joined the Transportation Safety Board (TSB) in 2015 as a Regional Senior Investigator in the Air Investigations Branch, at the Pacific regional office in Richmond (British Columbia).

Mr. Johnston has more than 26 years’ experience in civil aviation as a pilot and as an aircraft maintenance engineer. He holds an airline transport pilot licence (helicopter) with approximately 7000 hours’ flight time as well as M1 and M2 aircraft maintenance engineering licences. Just prior to joining the TSB, Mr. Johnston worked as a company safety officer and quality assurance manager. He has also owned and operated a small helicopter charter company in British Columbia, where he held the position of Operations Manager, Chief Pilot, and Director of Maintenance.


  Download high-resolution photos from the TSB Flickr page.

Class of investigation

This is a class 4 investigation. These investigations are limited in scope, and while the final reports may contain limited analysis, they do not contain findings or recommendations. Class 4 investigations are generally completed within 220 days. For more information, see the Policy on Occurrence Classification.

TSB 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.

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.

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