The Bombardier CRJ100 and CRJ200 are a family of regional airliners manufactured by Bombardier, and based on the Canadair Challenger business jet.
The CRJ200 is identical to the 100 model except for more efficient engines.
As of August 2006 a total of 938 CRJ100 and CRJ200 aircraft (all variants) were in airline service, with 8 further firm orders. Major operators include Comair (143), Pinnacle Airlines (132), SkyWest Airlines (136), Atlantic Southeast Airlines (110), Air Wisconsin (70),, ALMA de Mexico (22), Air Canada Jazz (58), Mesa Airlines (60), Lufthansa CityLine (26), Air Nostrum (35, Plus 7 orders), PSA Airlines (35) and Republic Airways Holdings (24). Some 19 other airlines also operate smaller fleets of the type.