© Carmen Groleau/CBC Flight F8 501 from Vancouver overran the runway at Waterloo Region International Airport on Friday morning. The Transportation Safety Board of Canada (TSB) is investigating after a plane that had left Vancouver with 140 people aboard overran the runway at the Waterloo Region International Airport on Friday. The safety and well-being of our passengers and crew is our top priority," a Flair Airlines spokesperson said in an email. The TSB closed runway 26, to carry out its investigation, but a spokesperson for the Region of Waterloo told CBC News that the airport will be closed to commercial traffic for the rest of Friday. Flair 881 to Montreal, which was scheduled to depart at 3:35 p.m.WestJet 557 to Calgary, which was scheduled to depart at 4 p.m.