Q: What is Boeing’s North Line in Everett?
A: The North Line is Boeing’s fourth 737 MAX assembly line, being built inside the company’s massive Everett factory at Paine Field. It targets a midsummer 2026 launch date and will eventually produce 737s at rates above 47 aircraft per month — the first time 737 production has ever happened in Everett.

Boeing’s North Line in Everett: What 737 MAX Production Means for the Whole Region

Boeing’s Everett campus has always been a widebody town — 747s, 767s, 777s, and now the mammoth 777X. The narrowbody 737 has, for its entire 59-year history, been a Renton product. That changes this summer.

The North Line — Boeing’s fourth 737 MAX assembly line — is taking shape inside the north end of the Everett factory, the world’s largest building by volume. It is targeting a midsummer 2026 launch date, and the people building it are chosen carefully, trained extensively, and aware that they are participating in something historically significant for this city.

Why This Matters Beyond Boeing

Boeing’s Paine Field operation is already Snohomish County’s largest private employer. The North Line is not just an internal manufacturing decision — it is an economic event for the entire region. Every production line position at Boeing creates an estimated 1.7 to 2.5 indirect jobs in the supply chain, in supporting businesses, and in the local service economy. Hundreds of new direct hires, plus the transfer of experienced workers from Renton to Everett, means new household incomes being spent in Snohomish County.

Mayor Cassie Franklin has highlighted the North Line as a central piece of Everett’s economic momentum narrative, alongside the $120M downtown stadium project and the Port of Everett waterfront redevelopment. The city’s pitch to prospective residents and businesses increasingly rests on the idea that Everett is growing in multiple economic directions simultaneously — aerospace, defense, waterfront real estate, and sports/entertainment.

What the North Line Will Build

The line will assemble all three 737 MAX variants: the MAX 8, MAX 9, and MAX 10. It will begin in a low-rate initial production (LRIP) phase, prioritizing quality checks over throughput. Boeing’s stated goal is to eventually reach a combined 737 MAX production rate of 63 aircraft per month across all four lines — Everett’s North Line would be responsible for the production capacity above the existing three Renton lines’ ceiling of approximately 47 per month.

Boeing is also introducing a new piece of equipment to the Everett operation: the 737 Wing Transport Tool, which manages the logistics of moving wing assemblies into position on the line. Infrastructure investment in the building itself — modifications to accommodate the 737’s different physical profile compared to widebody jets — has been underway since 2025.

The Workforce Building the North Line

New hires begin with 12 weeks of foundational training — much of it in Renton, working alongside experienced mechanics on active 737 production before transitioning to Everett. Among the first cohort: Jaden Myers and Alondra Ponce, who joined in late 2025. Veteran Boeing employee John V., with nearly 40 years at the company, is among those transitioning to support the North Line — his first time working on the 737 program after decades on widebody jets.

Production leader Jennifer Boland-Masterson described the approach plainly: “We know how to do it… but we need to warm up our muscles. You don’t start with a marathon.” That philosophy — methodical ramp-up before volume — reflects the lessons Boeing has taken from its well-publicized quality control issues of 2023-2024.

Recovery Context: Why This Line Matters for Boeing’s Credibility

The North Line is not just about adding jets. It is about demonstrating that Boeing can stand up a new production line — with new people, new facilities, and new processes — while maintaining the quality standards that the FAA, airlines, and the public are watching closely. The 2024 IAM machinists’ strike lasted nearly seven weeks and further stressed Boeing’s production schedule. The North Line launch will be scrutinized as a data point in Boeing’s recovery narrative.

For Everett, that scrutiny is an opportunity. If the North Line launches cleanly, it reinforces the case that Everett’s aerospace workforce is world-class — a message that supports workforce recruitment, community college aerospace programs at Everett Community College, and the city’s identity as a manufacturing hub distinct from Seattle’s tech-first image.

Frequently Asked Questions About Boeing’s North Line

Q: When does the Boeing North Line in Everett open?
A: The target is midsummer 2026. Boeing has not announced a specific date, but preparations and early workforce training are on track as of April 2026.

Q: How many jobs will the North Line create in Everett?
A: Boeing has not released a precise number, but the line will add hundreds of direct production positions. Mayor Franklin and industry observers have noted the multiplier effect on indirect jobs throughout Snohomish County.

Q: Will the North Line use union (IAM) labor?
A: Yes. Boeing’s Everett production workforce is represented by IAM District 751, the same union that represents workers at the Renton plant. North Line workers are being hired and trained under the same labor agreement.

Q: Is Boeing’s Everett campus the world’s largest building?
A: Yes, by volume. The Everett factory complex — which houses the widebody programs and now the 737 North Line — is approximately 472 million cubic feet in volume, the largest building by volume in the world.

Q: What is the ultimate production rate target for the 737 North Line?
A: Boeing’s stated goal is a combined 737 MAX rate above 47 aircraft per month across all lines, with a longer-term target approaching 63 per month. The North Line’s specific share of that rate has not been publicly specified.

Q: How does the North Line affect Paine Field airport operations?
A: 737 MAX aircraft produced at Everett will depart from Paine Field (Snohomish County Airport) for delivery flights, the same as widebody aircraft. Additional production aircraft may increase delivery flight traffic at Paine Field.

Related: Boeing’s North Line Is Coming to Everett: Inside the Workforce | Boeing 777X Production Flight Targeting April from Paine Field | Exploring Everett