The Boeing 737-400 is a twin-engine commercial airliner that was produced by Boeing Commercial Airplanes between 1988 and 2000. It is a variant of the Boeing 737-300 and is often referred to as the â€śBaby Boeingâ€ť due to its smaller size. With a capacity of up to 189 passengers, the 737-400 is the largest member of the 737 family.
Boeing developed the 737-400 in response to customer demand for a larger version of the 737-300. The aircraft was designed to carry more passengers and cargo than its predecessor, and it featured improved fuel efficiency and range. The 737-400 also featured the latest in avionics and navigation systems, as well as a new wing design that improved its aerodynamics.
The 737-400 was a popular choice for airlines, as it was less expensive to purchase and operate than larger commercial aircraft. By the time production ended in 2000, Boeing had sold more than 1,000 of the aircraft. As of 2020, there are still more than 800 737-400s in service around the world.
Despite its popularity, the 737-400 has experienced some issues with safety over the years. In 1995, a United Airlines 737-400 crashed in Colorado due to an in-flight fire, killing all 25 people on board. This prompted an investigation by the National Transportation Safety Board, which concluded that the fire had been caused by a faulty cargo door latch.
The 737-400 also introduced a number of innovations and technologies that are still in use today. The aircraft was the first Boeing jetliner to feature a glass cockpit, which replaced traditional analog gauges with digital displays. It was also the first jetliner to include a head-up display, which projects important flight data onto the pilotâ€™s windscreen.
The Boeing 737-400 is a reliable and reliable aircraft, and it remains popular with airlines and passengers alike. Its ability to fly long distances and its fuel efficiency make it a cost-effective option for airlines, while its modern avionics and navigation systems make it a comfortable and safe option for passengers. Although it has faced some safety issues over the years, the 737-400 continues to be an important part of the aviation industry.