Boeing 757

Boeing 757

The Boeing 757 is an American narrow-body airliner designed and built by Boeing Commercial Airplanes, received its first orders in August 1978. The prototype completed its maiden flight on February 19, 1982. After 1,050 had been built for 54 customers, production ended in October 2004. The jetliner is powered by Rolls-Royce RB211 or Pratt & Whitney PW2000 underwing turbofan engines. The 757 has a 2,000 sq ft (185 m2) supercritical wing for reduced aerodynamic drag and a conventional tail. It keeps the 707 fuselage width and six abreast seating and its two-crew glass cockpit has a common type rating with the concurrently designed 767. Major customers for the 757 included U.S. mainline carriers, European charter airlines, and cargo companies. It was commonly used for short and mid-range domestic routes, shuttle services, and transcontinental U.S. flights. ETOPS extended flights were approved in 1986 to fly intercontinental routes. In July 2017, there were 665 Boeing 757 in commercial service, with Delta Air Lines being the largest operator with 127 airplanes in its fleet. The airliner has recorded twelve hull-loss accidents, including eight fatal crashes, as of April 2022.

Variants
757-200
The 757-200, the original version of the aircraft, entered service  in 1983. It had to versions. One type is certified for a maximum capacity of 239, and alternative version can seat a maximum of 224. The first engine to power the 757-200, the Rolls-Royce RB211-535C, was succeeded by the upgraded RB211-535E4 in October 1984. Other engines used include the Rolls-Royce RB211-535E4B, along with the Pratt & Whitney PW2037 and PW2040. Its range is 3,850 nautical miles (7,130 km). Although designed for short and medium length routes, the 757-200 has since been used in a variety of roles ranging from high-frequency shuttle services to transatlantic routes. Total of 913 757-200 aircraft was produced. In July 2018, 611 of the 757-200 versions were in service. 
757-200PF
This is the cargo version of the 757-200, entered service with in 1987. When fully loaded, the aircraft can fly up to 3,150 nautical miles (5,830 km). Power is provided by RB211-535E4B engines from Rolls-Royce, or PW2037 and PW2040 engines from Pratt & Whitney. The freighter features a large, upward-opening main deck cargo door on its forward port-side fuselage. Total production for the 757-200PF totaled 80 aircraft.
757-200M 
The 757-200M, a convertible version capable of carrying cargo and passengers on its main deck, entered service in 1988, it also known as the 757-200 Combi. Patterned after convertible variants of the 737 and 747, the 757-200M can carry two to four cargo pallets on its main deck, along with 123 to 148 passengers in the remaining cabin space. Nepal Airlines' 757-200M, which features Rolls-Royce RB211-535E4 engines was the only production example ordered. This configuration is targeted at commercial charter flights which transport heavy equipment and personnel simultaneously. 
757-200SF
The 757-200SF is a passenger to freighter conversion developed by Boeing following an order for 34 aircraft plus 10 options by DHL. It entered service in 2001. In September 2006, FedEx Express announced a US$2.6 billion plan to acquire over 80 converted 757 freighters to replace its 727 fleet citing a 25% reduction in operating cost along with noise benefits
757-200PCF
It is a passenger to freighter conversion, developed by Precision Conversions and certificated in 2005. Reported in 2019 to cost $5 million per aircraft and similar to the SF it has 15 pallet positions. External differences include the removal of the forward passenger style doors and their replacement with a -200PF style small crew door. By early 2020 a total of 120 757-200PCFs had been delivered.



757-300
The 757-300, the stretched version of the aircraft, entered service in 1999. With a length of 178.7 ft (54.5 m), the type is the longest single-aisle twinjet ever built. Designed to serve the charter airline market and provide a low-cost replacement for the 767-200, the 757-300 shares the basic design of the original 757, while extending the fuselage forward and aft of the wings. Type has a maximum certified capacity of 295 passengers. The stretched variant offers a maximum range of 3,395 nautical miles (6,288 km). Engines used on the type include the RB211-535E4B from Rolls-Royce and the PW2043 from Pratt & Whitney. Production for the 757-300 totaled 55 aircraft. All 55 were in service in July 2018. 