The Boeing 737 Max was grounded for 20 months following two crashes that killed 346 people. Now, after design changes, the aircraft is returning to service. American Airlines invited the media along for a test flight on Dec. 2. After leaving the Dallas/Ft. Worth airport, the flight winged its way up to Tulsa, Okla., where American has its primary maintenance base. Here, the airline is getting its 737 Max fleet ready for service. Members of the public haven't flown on the plane since it was grounded in March 2019. Read more: https://wapo.st/2VsjU9V. Subscribe to The Washington Post on YouTube: https://wapo.st/2QOdcqK Follow us: Twitter: https://twitter.com/washingtonpost Instagram: https://www.instagram.com/washingtonpost/ Facebook: https://www.facebook.com/washingtonpost/