Boeing is building new 737 Max planes for the first time since workers went on strike

Boeing is resuming production of its bestselling plane, the 737 Max, for the first time since 33,000 workers began a seven-week strike that ended in early November.

The company said Tuesday that plane-building resumed at its plant in Renton, Washington, after going through a process of training workers and identifying and fixing potential problems.

Boeing shares rose 4.5%, their best single-day percentage gain in nearly four months.

Production and deliveries of Max jets and another airline plane, the 787 Dreamliner, have been stopped several times in recent years to fix manufacturing flaws.