Jason Redmond | AFP | Getty Images
Employees work on Boeing 737 MAX airplanes at the Boeing Renton Factory in Renton, Washington on March 27, 2019.
“We are making steady progress toward certification,” Boeing CEO Dennis Muilenburg said in a video on his Twitter account.
“Yesterday we completed the official engineering flight test with the updated software with our technical and engineering leaders on board the airplane. That was the final test flight prior to the certification flight.”
Boeing is updating the software controlling an anti-stall system that has been linked to deadly crashes in Indonesia and Ethiopia. The 737 Max remains grounded around the world pending regulatory approval to resume flying.