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Boeing 737

The Boeing 737 Classic is a series of narrow-body airliners developed by Boeing, serving as an upgraded version of the original 737 series. Introduced in the 1980s, the Classic lineup includes the 737-300, -400, and -500 models, featuring improvements in fuel efficiency, range, and capacity. These aircraft became popular choices for short to medium-haul flights, with advancements in avionics and aerodynamics.

History & development

The first prototype, the 737-100, flew in 1967, and the extended range 737-200 was introduced the following year. The 737 has since undergone numerous upgrades over the years including the rollout of the ‘NG’ or ‘Next Generation’ 737 and the more recent 737 MAX. The Boeing 737 has been a popular aircraft for airlines around the world due to its reliability, fuel efficiency, and versatility. It has also played a significant role in the growth of the low-cost carrier market, with many airlines using the 737 as their primary aircraft.

Boeing 737 news

TCAS averts possible head-on collision in Austin

On 16 October, an American Airlines 737 (N800NN) and Cessna R182 Skylane (N738PG) came dangerously close as the airliner was preparing to land in Austin. The Cessna, which was not coordinating with the Austin approach controller, turned directly into the final approach path for Runway 36L causing a Traffic Collision Avoidance System (TCAS) Resolution Advisory on the 737. The two

Currently airborne B737s

Flight tracking focus

The Boeing 737 is popular with both airlines and AvGeek’s alike. Due to the huge number of 737’s that have been built over the years, its often one of the first aircraft that people ever fly on and therefore many passengers have fond memories of their first flight. No trip to a major airport would be complete without catching a glimpse of a 737 operating in some form or another. Airlines also love the 737, largely due to its versatility making it perfect for airlines that serve a variety of destinations.

B737 facts & figures

Built
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Passenger Review (out of 5)
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4.2/5
Cruise speed (knots)
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B737 family specification

VariantB737-100B737-200B737-300/-400/-500B737-600/-700/-800/-900B737 MAX-7/8/9/10
Engines2 x PW JT8D-7/-9/-15/-172 x PW JT8D-7/-9/-15/-172 x CFM56-32 x CFM56-72 x CFM LEAP-1B
Height11m / 37.0ft11m / 37.0ft11.1m / 36.6ft12m / 41.0ft12.2m / 40.4ft
Length29m / 94.0ft30m / 102ft
Cruise / Maximum speedMach 0.75 / 0.82Mach 0.75 / 0.82Mach 0.75 / 0.82Mach 0.78Mach 0.78
Range2,850km / 1,540nm4,800km / 2,600nm
Max passenger load85 max102 max149/188/145 max149/149/189/220 max172/200/220/230 max

B737 videos

B737 frequently asked questions

The range of a Boeing 737 variant depends on a variety of factors, such as the specific model, engine type, and fuel capacity. Generally speaking, the range of a typical Boeing 737 variant is between 2,500 and 3,500 nautical miles (4,630 to 6,480 kilometers).

The range of the original 737-100 was around 1,540 nautical miles (2,850 kilometers), while the extended range 737-200 could fly up to 2,550 nautical miles (4,725 kilometers). The newer 737NG (Next Generation) series, which includes the 737-600, 737-700, 737-800, and 737-900, have ranges between 2,935 and 3,595 nautical miles (5,430 to 6,660 kilometers), depending on the model.

The latest variant of the 737, the 737 MAX, features improved engines and aerodynamics, which allow for greater fuel efficiency and an increased range. The 737 MAX 7 has a range of around 3,850 nautical miles (7,130 kilometers), while the 737 MAX 8 and 737 MAX 9 have ranges of around 3,550 and 3,550-3,750 nautical miles (6,570 and 6,940-6,940 kilometers), respectively.

It’s worth noting that the range of a 737 variant can be affected by factors such as passenger and cargo load, wind conditions, and altitude, among other things. Airlines will typically consider these factors when planning routes and determining the range of their aircraft.

The most common engine variants for the Boeing 737 include:

CFM56: This engine was the first engine option for the 737 and is produced by CFM International, a joint venture between GE Aviation and Safran Aircraft Engines. There are several versions of the CFM56, including the -3, -5, -7, and -9.

Pratt & Whitney JT8D: This engine was one of the original engine options for the 737 and is produced by Pratt & Whitney. It has since been replaced by newer engine options.

CFM International CFM-LEAP1B: This is the current engine option for the 737 MAX series and is a variant of the LEAP engine. It features advanced technology, including 3D-printed parts and improved aerodynamics, to provide increased fuel efficiency and reduced noise and emissions.

The cost of a Boeing 737 is heavily dependany on the variant. A new B737-700 currently costs $89.1M whilst the much newer Boeing 737 MAX 10 costs $134.9M.

To date, more than 120 airlines and operators have flown the Boeing 737. Some of the major airlines and operators that have used the Boeing 737 include Southwest Airlines, Ryanair, Delta Air Lines, United Airlines, American Airlines, and many more.

Header image © James Dinsdale