Quantcast

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

Airline praises pilots in crash-landing where both died but nearly half the passengers survived
Mexico state airline to buy five Embraer planes next year
A record number of people are expected to fly over the holidays. That's good for travel stocks, but not for passengers.
Airline Stocks Led The Travel Industry's Record 2024 Rally. Here's What's Next.
It’s beginning to look like another record for holiday travel
Qatar Airways cleans up at the World Travel Awards
All of the strikes at European airports this winter – find out if you are affected
Meet the CEO trying to turn around Air India, the 92-year-old airline with a pile of problems
Skiplagging: Unpacking the Risky Travel Trend That Involves Tricking Airlines
Qantas engineers walk off job on one of the busiest travel days of the year
South Korea to safeguard competition after Korean Air, Asiana merger
China Southern returns to Adelaide
Global Airline Industry Revenues Forecast To Top $1 Trillion For First Time In 2025
EasyJet to launch six new routes from the UK next year with £24 flights
Here's Why Analysts Say It's a Good Time to Buy Airline Stocks
A No-Frills Airline Is Getting Into the Premium Game
TAKING OFF: Major airline introduces new inflight service rules with less time to order your drinks
2 Delta flight attendants fail breathalyzer test before flight to JFK
EasyJet reveals plans for new flights from regional UK airport next summer
Airlines not switching quickly enough to green jet fuel, study says
Alaska Airlines tech issue briefly grounds planes in Seattle, disrupts bookings on Cyber Monday
US Senate panel criticizes rising airline seat fees, will call execs to testify
Spirit’s Demise Is a Lesson in ‘Airline-o-nomics’
Inside BA’s new first-class suites: £800 an hour for most private seat
Focus: US airline flight crews confident and angry as unions seek richer contracts
Hawaiian Airlines Eliminates Widebody Route Amid Alaska Airlines Merger
US budget airlines are struggling. Will pursuing premium passengers solve their problems?
Delta CEO says the Trump administration will reverse government ‘overreach’ seen under Biden
Spirit Airlines files for bankruptcy: How will it affect your travel plans?
British Airways yet to identify cause of latest IT meltdown
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

Lufthansa has been recognized as the world's most family-friendly airline by the World Airline Awards 2025.

Jun 17, 2025

Air India announced on X that flight AI171 from Ahmedabad to London Gatwick was involved in an accident shortly after takeoff.

Jun 16, 2025

Lufthansa Group Airlines has introduced new digital functions aimed at enhancing the travel experience for passengers.

Jun 16, 2025

Delta Air Lines has been recognized as the Best Global Airline for the Americas by the Airline Passenger Experience Association (APEX).

Jun 16, 2025

Seoul, South Korea, June 16, 2025 – Federal Express Corporation (FedEx) joined forces with the Korea Green Foundation in a plogging initiative to address plastic waste pollution and promote environmental responsibility.

Jun 16, 2025

Federal Express Corporation, a major player in express transportation, continues its dedication to youth empowerment through the 2025 FedEx/Junior Achievement International Trade Challenge (FedEx/JA ITC).

Jun 16, 2025