Air transportation safety investigation A11P0149

Loss of control and collision with ground

Northern Thunderbird Air Inc.
Beechcraft King Air 100, C-GXRX
Vancouver International Airport
Richmond, British Columbia
27 October 2011

View final report

The occurrence

The Northern Thunderbird Air Incorporated Beechcraft King Air 100 (serial number B-36, registration C-GXRX) departed Vancouver International Airport for Kelowna, British Columbia, with 7 passengers and 2 pilots on board. About 15 minutes after take-off, the flight diverted back to Vancouver because of an oil leak. No emergency was declared. At 1611 Pacific Daylight Time, when the aircraft was about 300 feet above ground level and about 0.5 statute miles from the runway, it suddenly banked left and pitched nose-down. The aircraft collided with the ground and caught fire before coming to rest on a roadway just outside of the airport fence. Passersby helped to evacuate 6 passengers; fire and rescue personnel rescued the remaining passenger and the pilots. The aircraft was destroyed, and all of the passengers were seriously injured. Both pilots succumbed to their injuries in hospital. The aircraft’s emergency locator transmitter had been removed.

Media materials

News releases

Deployment notice

Investigator-in-charge

Bill Yearwood got his first flying lessons on fixed-wing aircraft at 13 and was flying helicopters by the time he was 20. He holds an Airline Transport license, and has accumulated more than 10,000 flight hours in a wide variety of operations across Canada and in South America. These include: heli-logging, medevac, Arctic and offshore exploration, flight training and certification flight testing.

After 18 years of commercial flying, Mr. Yearwood joined Transport Canada in the Pacific region, where he worked as an Air Carrier Inspector and then as the Regional Manager of System Safety. During his time at Transport Canada he was a check pilot, helped draft the Canadian Aviation Regulations and helped perform audits of operations around the world.

Mr. Yearwood joined the TSB in 1999 as the Regional Manager and has worked as the Investigator-in-Charge on several aviation occurrences. He has worked diligently to improve safety in aviation, and is well known in the West Coast aviation community.

Photos

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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

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.