Boeing is examining a 737 production scenario of up to 75 aircraft a month, a level that would likely require a second North Line at its Everett, Washington, site by 2028. The current North Line is now active and forms part of the manufacturer’s plan to lift 737 MAX output beyond the present ramp.
The 737 programme is moving through another production increase, with Boeing publicly targeting 63 aircraft a month over the longer term. The existing North Line is understood to support about 15 jets a month, enough to help reach that goal, but not a substantially higher rate. Any move beyond 63 a month would put pressure on final assembly capacity and on the wider supply chain.
The forecast comes as Boeing continues to rebuild 737 production after years of disruption and backlog pressure. A second North Line would give the company more room to pursue larger output ambitions while keeping the Everett operation aligned with delivery plans for the 737 MAX family.