Boeing may assemble the re-engined 737 Max in the same facility as it builds the 737 NG family of aircraft in Renton, Washington.
Beverly Wyse, 737 programme vice-president and general manager, said a potential third line for the Max would be placed in Renton with the two existing lines by relocating engine, empennage and line work staging areas positioned between Line 1 and a mezzanine that runs the length of the building.
Commercial production at Renton is split between two lines in the 4-481 building. Line 1, the wider of the two lines, would likely play host to Line 3 for the 737 Max.