Occurrence
On 05 June 2015, a WestJet Boeing 737-6CT (registration C-GWCT, serial number 35112) operating as flight 588 departed Toronto/Lester B. Pearson International Airport, Ontario, for a scheduled flight to Montréal/Pierre Elliott Trudeau International Airport, Quebec. At 1457 Eastern Daylight Time, the aircraft touched down in heavy rain showers about 2550 feet beyond the threshold of Runway 24L and did not stop before reaching the end of the runway. The aircraft departed the paved surface at a ground speed of approximately 39 knots and came to rest on the grass, approximately 200 feet past the end of the runway. There were no injuries to the 107 passengers or 5 crew members and no damage to the aircraft. The 406-megahertz emergency locator transmitter did not activate. The incident occurred at 1458, in daylight.
Investigation
The Transportation Safety Board of Canada (TSB) conducted a class 3 investigation into this occurrence. Class 3 investigations analyze a small number of safety issues and may result in recommendations. These investigations are generally completed within 450 days.
Probable Cause
The investigation attributed the runway overrun to the delayed use of deceleration devices following a long landing in heavy rain.