In a letter, Ortberg stressed the need for improving performance in its defense business and its 737 MAX and 777 programs while broadly stabilizing Boeing, which is "at a crossroads" after lapses in its performance disappointed customers and eroded trust.

"This is a big ship that will take some time to turn, but when it does, it has the capacity to be great again," Ortberg told the planemaker's employees in a message containing prepared remarks for his first earnings call as CEO.