Boeing’s 737 Max is approved to fly again, but there’s more to be done before airlines can start using it. November 19, 2020 for American if not months IFTTT +2 It will take weeks NYT NYT > Business NYTimes United and Southwest to get the plane back into service — and reassure travelers about its safety. for American if not months IFTTT It will take weeks NYT NYT > Business NYTimes United and Southwest to get the plane back into service — and reassure travelers about its safety.