Boeing launches fourth 737 MAX production line in Washington WATCH. Photo: Ian Dewar Photography / Shutterstock.com Boeing has officially started operations at its new 737 MAX North Line in Everett, Washington, marking a significant expansion of the company's narrowbody aircraft manufacturing capacity.
The aerospace manufacturer announced the milestone on Wednesday, saying the new production line is now operational and will help meet growing customer demand for the 737 MAX family.
The Everett facility becomes Boeing's fourth 737 production line, complementing existing manufacturing operations as the company works to increase output of its best-selling commercial aircraft.
Boeing shared a first look inside the new factory on social media, highlighting the start of production and describing the new line as an important step in supporting future deliveries to airline customers worldwide.
VIDEO: BOEING
Our new 737 MAX North Line in Everett, Washington, is up and running. This fourth 737 production line will help expand capacity to meet customer demand. ✈️
— Boeing Airplanes (@BoeingAirplanes) July 9, 2026
?Now, we’re running too — #TeamBoeing is gearing up for a July 10 relay to hand off the baton from the original home of… pic.twitter.com/owzQIoURy7
The company also announced a symbolic employee relay scheduled for July 10, during which Team Boeing members will carry a baton from Renton, the original home of the 737 program, to the new production line in Everett.
According to Boeing, the relay represents the close relationship between the two manufacturing sites as they work together to build future generations of the 737.
The new line forms part of Boeing's broader efforts to expand production following increased demand for single-aisle aircraft. The 737 MAX remains one of the world's most popular commercial aircraft families, serving airlines across every continent.
Boeing has been gradually increasing manufacturing capacity while working closely with regulators following heightened oversight of its production processes over the past two years. The addition of the Everett line is expected to provide greater flexibility as the company fulfills its substantial order backlog.
The announcement comes as global airlines continue investing heavily in fuel-efficient narrowbody aircraft to meet growing passenger demand and replace older fleets.