KEY POINTS
  • Boeing does not expect its grounded 737 Max to return to service until June or July.
  • "That was always going to elongate return to service," Dave Calhoun said of the decision to use simulator training.
  • Calhoun, a longtime Boeing board member, became the new CEO of the aerospace giant earlier this month.
Two workers walk under the wing of a 737 Max aircraft at the Boeing factory in Renton, Washington, March 27, 2019.

Boeing CEO Dave Calhoun on Wednesday said the company's recommendation that pilots should undergo simulator training for the 737 Max prompted its decision to push back its timeline for when it expects the plane to return to service.

"The trigger was a decision we made with the help of the board regarding simulator training and our recommendation to go down that path," Calhoun said on a conference call with reporters. "That was always going to elongate return to service."