The Airbus A220, formerly known as the Bombardier CSeries, is a family of large single-aisle passenger jetliner made by Bombardier Aerospace. It is composed of two models, the CS100 (formerly C110) and CS300 (formerly C130). It complements the small passenger jetliner family manufactured by the Canadair division of Bombardier, the CRJ regional jet.

It was originally going to be called the BRJ-X.

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