24 November 2013
WestJet flight WS-131 , Boeing 737-600 from Calgary to Vancouver took off from Calgary airport and was climbing through FL240 when the crew reported engine vibration and requested to divert back to Calgary.Airplane landed safely on runway 35L
Calgary airport
http://flightaware.com/live/flight/WJA131/history/20131125/0600Z/CYYC/CYVR
Source
Canadian TSB