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Air transportation safety investigation A17O0025

The TSB has completed this investigation. The report was published on 23 April 2018.

Table of contents

Runway excursion

Air Canada
Airbus Industrie A320-211, C-FDRP
Toronto/Lester B. Pearson International Airport, Ontario

View final report

The occurrence

On 25 February 2017, an Air Canada Airbus Industrie A320-211 (registration C-FDRP, serial number 122), operating as flight AC623, was on a scheduled flight from Halifax/Stanfield International Airport, Nova Scotia, to Toronto/Lester B. Pearson International Airport, Ontario.

During the approach to Runway 15R, just prior to touchdown, the aircraft began to deviate to the right of the centreline. At 0002 Eastern Standard Time, shortly after touching down near the right edge of the runway surface, the aircraft deviated further to the right and entered the grassy area to the west of the runway. It travelled approximately 2390 feet through the grass and parallel to the runway before returning to the pavement. During the excursion, the aircraft struck 5 runway edge lights, causing minor damage to the left outboard wheel and the left engine cowling. There were no reported injuries. The event occurred during the hours of darkness.

Media materials

News release


Poor visibility and limited visual cues contributed to February 2017 runway excursion at Toronto/Lester B. Pearson International Airport
Read the news release


Runway excursion involving an Air Canada Airbus A320 at Toronto Pearson International Airport, Ontario
Read the news release

Deployment notice


TSB deploys a team of investigators to a landing incident at the Toronto Pearson International Airport, Ontario

Richmond Hill, Ontario, 25 February 2017 - The Transportation Safety Board of Canada (TSB) is deploying a team of investigators to the Toronto Pearson International Airport (YYZ) to assess a landing incident. The TSB will gather information and assess the occurrence.

Investigation information

Map showing the location of the occurrence


Photo of Ewan Tasker

Ewan Tasker has over 20 years of civil aviation experience. He joined the TSB in 2008, and is now a regional senior investigator based out of Richmond Hill, Ontario. Since joining the TSB, he has been the investigator-in-charge of more than 250 occurrences, including 11 major investigations.

Before joining the TSB, Mr. Tasker flew commercially throughout North and South America, accrued over 7000 hours of flight time, and obtained airline transport pilot licences from 3 different regulatory bodies. During his “from-the-ground-up” career, he has worked every position, from baggage handler to chief pilot. Mr. Tasker is also a Transport Canada–licensed air traffic controller.

  Download high-resolution photos from the TSB Flickr page.

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.