The McDonnell Douglas MD-90 is a twin-engine, single-aisle jet airliner designed for short to medium-haul flights. It was developed in the 1990s and is known for its efficient performance and modern design features, including a quieter engine compared to earlier models. The aircraft typically seats around 150 passengers and has a range of approximately 2,000 nautical miles. The MD-90 is an evolution of the earlier McDonnell Douglas MD-80 series, incorporating advanced technology such as a glass cockpit and improved aerodynamics. It was produced from 1995 until 2000, with several airlines operating the aircraft for its reliability and cost-effectiveness in regional air travel.