The "C Series" refers to a family of commercial aircraft developed by Bombardier Aerospace. Designed for regional and short-haul flights, these planes are known for their fuel efficiency, spacious cabins, and advanced technology. The series includes models like the CS100 and CS300, which can accommodate between 100 to 150 passengers. In 2018, the C Series program was sold to Airbus, which rebranded the aircraft as the A220. This transition allowed for increased production and global reach, enhancing the aircraft's market presence. The A220 is now recognized for its performance and comfort, making it a popular choice among airlines.