Q: What is Boeing’s 737 North Line in Everett?
A: The 737 North Line is a brand-new 737 MAX assembly line opening at Boeing’s Everett factory campus in summer 2026 — the first time 737s have ever been built in Everett. The line will initially produce 737 MAX 8, 9, and 10 variants, expanding Boeing’s single-aisle capacity to above 47 aircraft per month.

Boeing’s 737 North Line Is Coming to Everett This Summer — Here’s What It Means for the City

For decades, if you worked on a 737 for Boeing, you worked in Renton. That changes this summer.

Boeing is preparing to open its first-ever 737 MAX production line at the Everett factory campus — a move that adds hundreds of jobs, expands Snohomish County’s aerospace footprint, and repositions the Everett plant as a dual-program facility capable of producing both widebody and narrowbody jets under one roof.

The new line, called the North Line, will occupy space within Boeing’s massive Everett campus and will be capable of building all 737 MAX variants — the MAX 8, MAX 9, and the yet-to-be-certified MAX 10. Production is expected to begin this summer in a Low Rate Initial Production (LRIP) phase, with full integration into Boeing’s broader 737 MAX flow to follow.

Why Everett, Why Now

Boeing’s Renton factory has been under intense pressure to increase 737 MAX production rates — a demand that intensified after the 2024 labor strike that halted Puget Sound production for nearly two months and set delivery schedules back by months. The FAA has capped Boeing’s 737 MAX production at 38 aircraft per month as part of an ongoing safety oversight agreement; Boeing’s commercial future depends on raising that rate to 47 per month and eventually beyond.

The North Line in Everett is Boeing’s answer to the capacity problem. Rather than cramming more production into the Renton facility — one of the busiest aircraft assembly sites on earth — Boeing is expanding geographic capacity by adding a second line 30 miles north, in a factory already staffed with tens of thousands of experienced aerospace workers.

The Everett campus currently hosts final assembly for Boeing’s widebody jets — the 787 Dreamliner and the 777X program. Adding 737 production brings a new dimension to a campus that was already the largest building by volume in the world.

How the North Line Works

Unlike the Renton facility, where wings and fuselages come together in a more conventional flow, Everett’s North Line relies on a new logistics innovation: the 737 Wing Transport Tool. Partially completed wings will be built in Renton, then transported to Everett for final assembly — a cross-site workflow that Boeing has carefully engineered to maintain quality standards across both locations.

Workforce on the North Line is a blend of new hires and experienced employees transferring from Renton and Moses Lake. New hires complete a 12-week Foundational Training program before beginning structured on-the-job training alongside veteran assemblers. The approach is deliberate — Boeing’s production leader for the Everett line, Jennifer Boland-Masterson, described the ramp-up as running, not sprinting: “You don’t start with a marathon.”

Early North Line workers include Jaden Myers, hired in late 2025 to install the dorsal fin assembly in Flow Day 1, and Alondra Ponce, an electrician also joining at the first flow position. Both went through the Foundational Training in Renton before coming to Everett. John V., a nearly 40-year Boeing veteran who previously coached quality work in Everett, now serves as FAA and customer coordinator for the new line.

What It Means for Everett

The North Line’s most immediate local impact is jobs — hundreds of positions, a mix of newly hired workers and transfers from other Boeing facilities. The International Association of Machinists (IAM) District 751, which represents approximately 30,000 Boeing production workers across the Puget Sound region, will cover North Line production workers under its collective bargaining agreement.

Mayor Cassie Franklin highlighted Boeing’s “continued importance” to Everett at her April 2026 State of the City address, citing the company alongside clean-energy firms as pillars of the city’s advanced manufacturing future. With over 30,000 Boeing employees working across the Everett campus already, the North Line represents an expansion on top of an already enormous local economic anchor.

For Snohomish County broadly, the North Line reinforces Everett’s position as the aerospace capital of the Pacific Northwest — a status that was tested by the 2024 strike, production problems, and ongoing FAA scrutiny, but never truly in doubt given the scale of Boeing’s physical infrastructure here.

One Asterisk: The MAX 10

The 737 MAX 10, Boeing’s longest and most fuel-efficient narrowbody, remains uncertified by the FAA as of April 2026 due to an unresolved engine de-icing system design issue. The North Line is capable of building MAX 10s, but commercial deliveries of that variant won’t begin until FAA certification is complete. Airlines — including Alaska Airlines, which has a significant presence at Paine Field — are waiting on MAX 10 deliveries. For now, the line will focus on the already-certified MAX 8 and MAX 9.

Looking Ahead

Boeing has been through a punishing few years — the 2024 strike, ongoing MAX certification disputes, leadership changes, and an FAA safety agreement that cap production rates. The North Line’s launch this summer is a concrete signal that the company is moving forward, and that Everett remains central to that future.

For the workers, families, and businesses that orbit the Boeing campus in north Snohomish County, the North Line is more than a production expansion. It’s a visible sign that the world’s largest aerospace factory is adding capacity in a community that has tied its economic identity to that campus for more than 50 years.

The line is expected to be operational by midsummer 2026. Boeing has not announced a formal opening date.

Frequently Asked Questions

Where is the Boeing 737 North Line located?

The 737 North Line is located within Boeing’s Everett factory campus in Everett, Washington — on the Snohomish County campus that also houses final assembly for the 787 Dreamliner and 777X programs. This is the first time 737s have been assembled in Everett; the type has historically been built exclusively in Renton, WA.

How many jobs will the North Line create in Everett?

Boeing has not released a specific headcount for the North Line. The workforce is a combination of newly hired employees and existing staff transferring from Renton and Moses Lake operations. Industry observers estimate hundreds of direct positions, covered under the IAM District 751 collective bargaining agreement.

When will the Boeing 737 North Line open?

Boeing is targeting summer 2026 for the North Line’s opening, with midsummer the most cited estimate. The line will enter Low Rate Initial Production (LRIP) first, then scale up to full integration with Boeing’s overall 737 MAX flow.

What models will the Everett North Line build?

The North Line is capable of building all 737 MAX variants — the MAX 8, MAX 9, and MAX 10. Initial production will focus on the MAX 8 and MAX 9, which are FAA-certified. The MAX 10 remains uncertified due to engine de-icing system issues.

Is the Everett North Line a union shop?

Yes. North Line production workers are represented by IAM District 751, the International Association of Machinists union that covers approximately 30,000 Boeing production employees across the Puget Sound region under a collective bargaining agreement.

How does the Everett 737 line differ from the Renton factory?

The Renton factory is Boeing’s main 737 MAX production hub, where wings and fuselages are assembled from scratch. Everett’s North Line uses a 737 Wing Transport Tool to receive partially completed wings from Renton and complete final assembly in Everett — a cross-site workflow new to the 737 program. The Everett campus also simultaneously produces 787 Dreamliners and (in development) 777X jets.

What does the North Line mean for Paine Field?

Paine Field (Snohomish County Airport) is the flight delivery hub adjacent to the Everett factory. As North Line production ramps up, Paine Field will see increased activity in Boeing flight test and customer delivery operations for 737 MAX aircraft — adding to the widebody deliveries already occurring there.