Quantcast

Boeing's evolution of engine choices across its bestselling 737 variants

Here's how Southwest Airlines' new seating and boarding process will work
Delta Adds New Route to Asia
Southwest Airlines will begin selling assigned seats in 2025
United Airlines Pilot Buys Passengers Pizza In Albuquerque After Flight Was Delayed 7 Hours
Airlines begin canceling flights, offering rebooking ahead of Hurricane Helene
Southwest Airlines to cut service and staffing in Atlanta to slash costs
New heights, new features: Discover Alaska’s enhanced Flight Pass subscription service
Alaska Airlines completes acquisition of Hawaiian Airlines, expanding benefits and choice for travelers
American Airlines welcomes JetSMART to the award-winning AAdvantage program
Explore Japan for free? Japan Airlines offers free domestic flights to foreign travelers
Delta named Official Airline Partner of Birmingham City Football Club
American Airlines to Cut These Routes to Las Vegas, Orlando, and More — Here's Why
Alaska Airlines completes acquisition of Hawaiian Airlines, expanding benefits and choice for travelers
Southwest wouldn't really start charging for bags — right?
JD Power ranked this Midwest airport as the best among largest airports in North America
Alaska Airlines Chief Plans More Routes After a Deal With Hawaiian
Air Canada could begin suspending flights soon as strike deadline nears
JetBlue's new ticket policy entitles every passenger to a carry-on bag
Why United Airlines’ CEO makes as few decisions as possible
American invests in the future of aviation maintenance with new jobs, additional work
DOT probe seeks to determine if frequent flyer programs are fair to travelers
American Airlines flight diverted after passenger starts vaping
Russian Airline Wants $100 Million From Canada for Seizing Its Giant Cargo Plane
Here's where American Airlines is adding flights to Europe in summer 2025
Major airline grounds Airbus A350 fleet, citing faulty engine component
Airline CEO wants airports to cap passengers at 2 alcoholic drinks to limit on-board disruptions
Regulator cuts Malaysia Airlines' air operator certificate duration after probe
United Airlines flight attendants are prepared to strike. Here's why it's still unlikely.
2 workers killed, 1 injured in tire explosion at a Delta Air Lines shop in Atlanta
Emirates Will Buy 5 Airbus A380s From Lessor For $200 Million
Boeing's evolution of engine choices across its bestselling 737 variants
Policy
Webp 737b
Boeing 737 | Wikipedia

The Boeing 737, a popular commercial aircraft, has seen nearly 12,000 units built since its introduction in 1967. Over the years, the aircraft has evolved through different variants powered by four main types of engines.

The Boeing 737 family is divided into four sub-families: Original, Classic, Next Generation (NG), and MAX. Each sub-family represents advancements in technology and design. The Original series includes the 737-100 and 737-200 models, with the latter being more successful in sales. This was followed by the Classic series in the 1980s, which included models such as the 737-300, -400, and -500. These models improved on capacity and range.

The Next Generation series emerged amid increasing competition from Airbus and consisted of models like the 737-600 to -900. It was succeeded by the MAX family in the mid-2010s, which features certified variants like MAX 8 and MAX 9.

Get the Newsletter
Sign-up to receive weekly round up of news from Sky Industry News
By submitting, you agree to our Privacy Policy and Terms of Service. By providing your phone number you are opting in and consenting to receive recurring SMS/MMS messages, including automated texts, to that number from our short code. Msg & data rates may apply. Reply HELP for help, STOP to end. SMS opt-in will not be sold, rented, or shared.

Initially, Boeing used Pratt & Whitney JT8D engines for the Original series. These engines were known for their distinctive long and thin appearance. According to Pratt & Whitney, these engines have logged over 673 million flying hours.

For the Classic series, Boeing switched to CFM International's CFM56-3 engines. "According to CFM International," this engine is part of a family that powers various commercial and military aircraft. Its use resulted in increased efficiency and reduced noise pollution compared to its predecessor.

The NG series continued using CFM International engines but upgraded to the CFM56-7 model. This engine offered better fuel efficiency and power compared to earlier versions. CFM International notes that this combination became "the most popular engine-aircraft combination in commercial aviation history."

Finally, for the MAX series, Boeing opted for a new design with CFM International's LEAP-1B engine. Despite challenges such as a grounding period due to accidents involving MAX aircraft, Safran reports that LEAP-1B engines have already accumulated over 60 million flight hours across more than 160 operators globally.

Organizations Included in this History
More News

Airlines for America announced on X that it is promoting the 2025 joint ATA e-Business Forum & S1000D User Forum, scheduled for October 6–8 in Montreal, Canada.

Apr 21, 2025

Air India has announced on the social media platform X that it is promoting DigiYatra for contactless travel on domestic flights.

Apr 21, 2025

Flying Food Group has announced on X, formerly known as Twitter, that it is promoting open positions across the United States and encouraging job seekers to apply.

Apr 21, 2025

Los Angeles International Airport (LAX) has announced on the social media platform X that Hawaiian Airlines will be relocating its operations to Terminal 6.

Apr 21, 2025

Flying Food Group has announced on the social media platform X that it is hiring station attendants for airline catering positions in Hawaii.

Apr 21, 2025

Etihad Airways has announced its support for DigiYatra, an Indian government platform that facilitates contactless travel through facial recognition technology.

Apr 21, 2025