Based on the Boeing 747-200B, the US President's aircraft (Air Force One) is powered by four Pratt & Whitney JT9D-7R4G2 turbofan engines. These engines are of the high-bypass turbofan type and each is capable of producing about 56,000 pounds of thrust. JT9D-7R4G2 engines are suitable for long-haul flights due to their high fuel efficiency. The design of these engines includes advanced systems to reduce noise and increase efficiency. Protection systems and resistance to security threats are important features of these engines. JT9D engines are an ideal choice for sensitive and important missions due to their high reliability and performance stability. Using modern technologies, these engines ensure optimal performance and security for the president's plane.