PORTLAND, Maine: A business jet crashed during takeoff in a snowstorm, killing all six people aboard in Maine on the night of January 25. We have a passenger aircraft upside down,” about 45 seconds after a plane was cleared for takeoff. Around the same time, the Bombardier jet had gone to the area where planes are treated to remove ice. An aviation safety expert said this type of Bombardier Challenger 600 jet has had problems with ice during takeoff in the past, resulting in deadly crashes in England and Colorado more than 20 years ago. Officials said they will not release the names of the people on the plane until their identities are confirmed.