The Mitsubishi CRJ-100 is a family of short-range, regional jet airliners that were designed and manufactured by the Japanese aerospace company Mitsubishi. The aircraft was designed to be an economical option for short-haul passenger flights, and entered service in 1993.

The CRJ-100 was designed to provide a low-cost alternative to other regional jets, such as the Bombardier Dash 8 and Embraer ERJ-145. The aircraft is powered by two General Electric CF34-3A1 turbofan engines, and has a range of up to 1,500 kilometers. The CRJ-100 can accommodate up to 50 passengers in a two-class configuration, and is typically used on routes with less than 250 passengers.

Mitsubishi developed the CRJ-100 in response to the growing demand for regional jet aircraft in the 1990s, and the aircraft has proven to be popular with airlines, with over 500 delivered to customers around the world. The aircraft has also seen military service, with the Japanese Air Self-Defense Force and the Royal Canadian Air Force both operating the CRJ-100.

The CRJ-100 has been relatively reliable over its service life, although there have been some notable safety issues. In 2001, a CRJ-100 operated by Comair Flight 3272 crashed in the United States due to a propeller overspeed, resulting in the deaths of all 29 passengers and crew on board. The aircraft has also been involved in several other incidents, including a runway excursion in the United States in 2007 and a hard landing in Canada in 2009.

Despite these issues, the CRJ-100 has been praised for its fuel efficiency and low operating costs. The aircraft is also equipped with a number of innovative technologies, such as a heads-up display, a flight management system, and an advanced cockpit.

The CRJ-100 is a reliable and cost-effective regional jet, and is popular with airlines that operate in the short-haul market. The aircraft is generally considered to be a step up from other regional jets, as it offers more advanced technology and better fuel efficiency. The CRJ-100 has proven to be a success for Mitsubishi, and has become a staple of the regional jet market.