Boeing 737-700

Boeing 737-700. The Boeing 737-700 is a twin-engine, single-aisle jet airliner developed by Boeing Commercial Airplanes as the foundation model of the Boeing 737 Next Generation family. It was launched in 1993 as a direct replacement for the earlier Boeing 737-300 and first entered revenue service with Southwest Airlines in late 1997. The aircraft is renowned for its operational efficiency, extended range, and commonality with other members of the Boeing 737 Next Generation series, making it a popular choice for airlines worldwide.

Development and design

The 737-700 was developed in response to the need for a modernized successor to the successful Boeing 737 Classic series, particularly competing with the new Airbus A320 family. The program was officially launched in November 1993 following an order from launch customer Southwest Airlines. Key design improvements over the Boeing 737-300 included new, more efficient CFM International CFM56 engines, a redesigned wing with increased span and area, and the incorporation of advanced avionics from the Boeing 777, such as a glass cockpit. The airframe was also lengthened slightly and featured upgraded interiors, while maintaining a high degree of commonality with previous 737 models to reduce pilot training costs for operators like Alaska Airlines and Continental Airlines.

Operational history

The 737-700 entered commercial service with Southwest Airlines in December 1997, quickly establishing itself as a reliable and economical workhorse. Its performance made it suitable for a variety of routes, from short-haul domestic flights to longer transcontinental and thin international routes. Major carriers such as United Airlines, American Airlines, and WestJet integrated large fleets of the type. The aircraft also saw significant military adoption, forming the basis for the Boeing P-8 Poseidon maritime patrol aircraft operated by the United States Navy, the Royal Australian Air Force, and the Indian Navy. Its operational flexibility allowed it to serve in diverse environments from the Arctic with Air Inuit to remote islands in the Pacific Ocean.

Variants

Several specialized variants of the 737-700 were developed. The Boeing Business Jet (BBJ) is a corporate version with auxiliary fuel tanks for intercontinental range, popular with heads of state and private operators. The Boeing 737-700ER (Extended Range) combined the standard -700 fuselage with the strengthened wings and landing gear of the larger Boeing 737-800, offering increased range for operators like All Nippon Airways. The most significant military derivative is the Boeing P-8 Poseidon, a multi-mission maritime patrol and anti-submarine warfare aircraft developed for the United States Navy and exported to several allied nations including the United Kingdom and Norway.

Specifications (737-700)

The 737-700 is typically configured to carry 126 passengers in a two-class layout or up to 149 in a high-density arrangement. It is powered by two CFM International CFM56-7B turbofan engines, each producing up to 27,300 lbf of thrust. The aircraft has a length of 33.6 meters, a wingspan of 34.3 meters, and a height of 12.5 meters. Its maximum takeoff weight is typically 70,080 kg, with a maximum range of approximately 6,400 kilometers when equipped with optional auxiliary fuel tanks, allowing for routes such as Honolulu to the West Coast of the United States.

Incidents and accidents

The 737-700 has maintained a strong safety record throughout its service life. Notable incidents include the crash of Southwest Airlines Flight 1248 in 2005, which overran a runway at Chicago Midway International Airport during a snowstorm. In 2018, Southwest Airlines Flight 1380 experienced an uncontained engine failure, resulting in a fatality but a successful emergency landing at Philadelphia International Airport. Other incidents have involved runway excursions, such as one involving a TUI fly Netherlands aircraft at Curaçao International Airport, and a hard landing by a Norwegian Air Shuttle flight at Tromsø Airport. These events have been investigated by bodies like the National Transportation Safety Board and have led to safety recommendations regarding engine inspection protocols and pilot training.

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