The Bombardier C-Series is a family of narrow-body, twin-engine, medium-range jet airliners currently under development by Canadian manufacturer Bombardier Aerospace. The C-Series models are the 110-seat CS100 and the 135-seat CS300.
The CS100 took its first flight on September 16, 2013. The CS100 was awarded an initial type certification by Transport Canada on December 18, 2015. Entry into service for the CS100 is expected in 2016. The CS300 first flew on February 27, 2015, and is to enter service approximately six months after the CS100.