Several countries and airlines have now grounded their Boeing 737 Max 8 airplanes while the US Federal Aviation Administration (FAA) has deemed them airworthy.
American Airlines and Southwest both continue to fly them, as does United Airlines with the 737 Max 9 version.
Bloomberg run a good opinion piece about this (access here) of which below is an excerpt:
Airlines and regulators in other countries are already voting with their feet. China, Indonesia, Singapore and Australia have suspended operations of 737 Max variants, while Ethiopian Airlines Group, Grupo Aeromexico SAB de CV, Brazil’s GOL Linhas Aereas Inteligentes SA and South Korea’s Eastar Jet Inc. have grounded their own planes. After one of its own 737 Max planes crashed in October, PT Lion Mentari Airlines is considering a switch to Airbus SE, Bloomberg News reported citing a person familiar with the matter. As a result, about a third of the 350-strong global fleet is already out of action.
There’s no technical trigger for a grounding order. Instead, it’s a judgment call by the department in question, complicated by the fact that the FAA currently doesn’t have a permanent administrator. U.S. Secretary of Transportation Elaine Chao, who’s responsible for the agency and whose views would probably be decisive, seems to be taking a wait-and-see approach. Boeing’s Chief Executive Officer Dennis Muilenburg, meanwhile, has worked hard to be close to President Donald Trump, who could decide the issue one way or another with a single tweet.
Fatal airline accidents are rare and two very similar crashes by this very Boeing 737 Max 8-model just after take off may indicate that there is an issue.
Should countries allow and airlines continue to fly them putting passengers lives potentially at risk is an open and political question too.
I would err on the safe side and first find out what the black boxes (orange colored in reality) tell that were collected from the crash site before taking another Boing 737 Max 8 operated flight.