Boeing's (NYSE: BA) goal to return its troubled 737 MAX to service by mid-year could be in jeopardy after the company has reportedly pushed back its planned test flight for regulators until May at the earliest. The 737 MAX was grounded worldwide in March 2019 after a pair of fatal accidents involving the plane. Boeing has missed multiple self-imposed deadlines to return the plane to service but seemed confident on hitting its latest goal. But the COVID-19 coronavirus pandemic appears to have complicated matters, with the AFP News Service reporting late Tuesday that a planned test flight has been delayed until May. https://twitter.com/hashtag/BREAKING?src=hash&ref_src=twsrc%5Etfw!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+"://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); Regulator test flight of Boeing 737 MAX delayed to May, according to sources pic.twitter.com/YAchZn5kAm — AFP news agency (@AFP) https://twitter.com/AFP/status/1247606336709431298?ref_src=twsrc%5Etfw!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+"://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); The delay shouldn't come as much of a surprise, as Boeing has suspended operations at its Puget Sound commercial aviation base due to the pandemic. The company initially paused manufacturing in Washington state for two weeks but said Sunday it had extended the suspension indefinitely. The 737 MAX is assembled in Washington, and Boeing has been conducting test flights on its updated software from Seattle-area locations. Image source: Boeing. Shares of Boeing, which had been up by as much as 11% early in the day Tuesday, closed down 4.3% after the news broke. But even when the plane returns to service, it is unclear that demand will be as strong as once anticipated. Airplane leasing giant Avolon last week said it was cancelling orders for 75 737 MAX planes and deferring delivery on an additional 16 airframes, due to financial weakness in the airline sector. 10 stocks we like better than BoeingWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Boeing wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of March 18, 2020 Lou Whiteman has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source