CRJ stands for "Canadair Regional Jet," a series of regional jet aircraft designed for short to medium-haul flights. Developed by Bombardier, the CRJ family includes several models, such as the CRJ100, CRJ200, CRJ700, and CRJ900, each varying in passenger capacity and range. These jets are known for their fuel efficiency and ability to operate in smaller airports. The CRJ aircraft are widely used by regional airlines and are popular for connecting smaller cities to larger hubs. Their design features a narrow fuselage and high-mounted wings, which contribute to their performance and efficiency. The CRJ series has become a staple in the aviation industry, serving various airlines around the world.