The Mitsubishi CRJ-700 is a regional jet airliner designed and manufactured by Mitsubishi Heavy Industries (MHI). It was developed as a larger version of the earlier Mitsubishi CRJ-200 model, and it first flew in April 1999. Since then, the CRJ-700 has become one of the most popular regional jets in operation, with over 1,400 aircraft delivered by the end of 2020.

Mitsubishi decided to manufacture the CRJ-700 in order to meet the growing demand for larger regional jets. The aircraft was designed to offer greater seating capacity, range and speed than its predecessor, while retaining the same fuel efficiency and operating costs. The CRJ-700 also featured advanced technologies such as an improved avionics suite, composite materials and fly-by-wire controls.

The CRJ-700 has become one of the most commonly used regional jets in the world, and is used by major airlines such as Air Canada, United Airlines and American Airlines. However, the aircraft has faced some safety issues over time. In 2006, a CRJ-700 operated by regional airline Comair in the United States crashed due to pilot error. In 2018, a CRJ-700 operated by Air Canada had to make an emergency landing due to engine failure.

Despite these issues, the CRJ-700 has remained a popular aircraft due to its advanced technology and cost-effectiveness. The aircraft features a modern avionics system, a fly-by-wire flight control system, and composite materials for improved fuel efficiency and reduced maintenance costs. The aircraft also has an advanced cabin environment, with larger windows, more comfortable seating and improved cabin lighting.

The CRJ-700 is also known for its innovations in terms of fuel efficiency and engine performance. The aircraft is powered by two General Electric CF34-8C5 engines, which offer improved fuel efficiency and increased range. The aircraft is also equipped with winglets, which improve efficiency and reduce drag.

Overall, the Mitsubishi CRJ-700 is a reliable and cost-effective regional jet that has become one of the most popular aircraft in operation today. The aircraft offers improved seating capacity, range and speed, while retaining the same fuel efficiency and operating costs. It also features advanced technology such as fly-by-wire controls, composite materials and improved avionics. Despite some safety issues in the past, the CRJ-700 remains a popular aircraft due to its cost-effectiveness and innovations.