Near future

Our employees in Renton are getting ready for the first 737 MAX to enter the 737 production system next year. Thanks to a loan from our engine supplier CFM International, a full-scale model of the all-new LEAP-1B engine, the exclusive engine for the 737 MAX, is on display in the 737 factory through December. This gives our employees a chance to glimpse part of their near future with the new single-aisle airplane.


A full-scale model of the LEAP-1B engine, the exclusive powerplant for the new 737 MAX, is on display in our Renton factory. Photo by Jim Anderson.


A steady stream of employees checking out the model to see what the near future will bring with the 737 MAX. Photo by Jim Anderson.

The LEAP-1B engine combines the fuel efficiency technology developed and proven on widebody engines such as the GE90 (777) and GEnx (787) with the industry-leading reliability of the CFM56 family. Improvements come from highly durable, light-weight materials and improved airfoil technology. The engine, combined with the Advanced Technology winglets and aero improvements, contributes the majority of the 14 percent fuel efficiency gain over today’s most efficient single-aisle airplanes.


Leaders on the 737 MAX program visit the model powerplant. Photo by Jim Anderson.

The model is on display across from the current CFM56-7B engine build up area in the factory so employees can see how the engines differ.The LEAP-1B is 69 inches in diameter compared to 61 inches on the CFM56-7B. The 737 MAX design, including a new strut and pylon, uses technology similar to what was used on the 787 to better integrate the engine with the wing effectively reducing drag.

Comments (3)

Andrew Boydston (Boise, ID USA):

That's the engine I'll probably ride on, since living in the Northwest. The picture(s) doesn't tell the story of what lies within it. CFM should be proud of its accomplishment. Its a really compact muscle under the wing. It would take years of aero space technology experience to know it. In fact, if you counted all the years experience and education going into this engine, it would total in the thousands of years making this beauty. I can't wait to hear it fire up.

Randy, please, if you have a block test video of this engine running, please share on your Journal. I would love to see a preliminary look of this CFM running during testing.

As always, thank you in advance for any requests that can be accepted.

Daryl (Houston):

It is amazing just how close we are to see the Max coming down the line. Great photos and congrats to the team as you keep getting closer.

Alan (San Jose, CA):

Nice! Will the production engines have those cool electric-blue highlights, too, or is that just an artifact of the digital photography? Just wondering.

Post a comment

We welcome your comments. However all comments are moderated and may not post immediately. Offensive or off-topic comments will not be posted. We will not treat any comments you submit as confidential information. Please do not submit comments that contain any confidential information belonging to anyone else.

By submitting a comment to Randy's Journal, you agree to our site terms and privacy policy, and to having your name displayed with your comment. All or part of your comment may be posted or cited in the blog. Your name and personal information will not be used for any other purpose, and we will not publish your e-mail address.


More posts