The Boeing 737 Max is now one of the most controversial airliners of all time. Here are 4 others.

The Boeing 737 Max airliner has been grounded by regulatory agencies and airlines worldwide. The action comes after two nearly-brand-new Boeing 737 Max 8 airliners crashed within a matter of months. The crashes, the grounding of the fleet, and the public furor make the Boeing 737 Max one of the most controversial airliners in recent memory. Other airliners that ran into trouble include the De Havilland Comet, McDonnell Douglas DC-10, and the Airbus A320.

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