Air transportation safety investigation A20W0016

Updated in November 2020 : This investigation is in the report phase.

Table of contents

Hard landing

Bombardier Challenger 605
Calgary International Airport, Alberta

The occurrence

A privately registered Bombardier Challenger 605 was conducting a flight from Palm Beach International Airport, Florida, United States (KPBI), to Calgary International Airport, Alberta (CYYC), with three crew members and 10 passengers on board.

During the final descent, the flight crew attempted to deploy the flaps and immediately received a flaps fail caution message. The decision was made to abandon the approach, and the crew received clearance from air traffic control (ATC) to proceed northeast of the airport and troubleshoot the issue. The crew executed the applicable procedure and subsequently received clearance from ATC to proceed with the landing.

A landing without flaps deployed was then executed. During the landing roll, after ground spoiler and thrust reverser deployment, the nose of the aircraft attained a significant nose-high attitude. The rear fuselage of the aircraft struck the runway, and during the recovery, the nose landing gear subsequently impacted the runway. The aircraft taxied clear of the runway and to the intended parking area. Subsequent inspection revealed that the aircraft sustained significant structural damage to the forward fuselage and minor damage to the rear fuselage. There were no injuries.

The TSB is investigating.

Investigation information

Map showing the location of the occurrence


Photo of Jeremy Warkentin

Jeremy Warkentin joined the Transportation Safety Board of Canada (TSB) in 2017 as a Regional Senior Technical Investigator, in the Aviation Investigations Branch, at the regional office in Edmonton, Alberta.

Mr. Warkentin is a graduate of the British Columbia Institute of Technology’s Aircraft Maintenance Engineer (AME) program and has more than 20 years of aviation experience working for several fixed wing operations as a licensed Aircraft Maintenance Engineer, Quality Assurance Manager and Base/Production Manager. He holds both an M1 and M2 license, and has experience on aircraft ranging in size from the Cessna 152 to the Airbus A321.

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.

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