The Challenger 300 is a 3,100 nmi (5,700 km) range super-midsize business jet, developed by Bombardier Aerospace, announced in 1999 and introduced in 2004. The Challenger 350 is a slightly improved 3,200 nmi (5,900 km) range variant introduced in 2014. As a new design, it is not developed from the Challenger 600 series, nor its Challenger 800 series variant.