The Boeing 737 MAX aircraft has been grounded since …. (count up timer)

On 13 March 2019, U.S. aviation regulators grounded all Boeing 737 aircraft after the FAA discovered new evidence of accident similarities between crashed Lion Air flight JT610 and Ethiopian Airlines flight ET302.

Shortly before, the Canadian Ministry of Transport restricted commercial passenger flights from any air operator, both domestic and foreign, of the Boeing 737 MAX aircraft from arriving, departing or overflying Canadian airspace. The first government regulator to ground the MAX model was the Civil Aviation Administration of China (11 March 2019). By 18 March, all 387 airplanes were grounded, disrupting 8,600 weekly flights by 59 airlines.

Air Canada AC7054 was the last flight that operated a commercial flight, with a Boeing 737 MAX 8 (C-FSIP).

More Boeing 737 MAX news.

FAA orders temporary grounding of Boeing 737 MAX operated by U.S. airlines or on U.S. territory

Air Canada and Westjet suspend flights with the Boeing 737 MAX, following restrictions by Canadian authorities