(Reuters) -Brazil’s Gol Linhas Aereas Inteligentes SA said on Monday it would resume flying Boeing Co’s 737 MAX planes on commercial routes in its domestic network from Dec. 9. Gol also said refini.tv/36VNMCq it expects all of the seven 737 MAX aircraft in its current fleet to be cleared to return fully to operation by the end of December. The announcement comes less than a week after American Airlines Group Inc staged the 737 MAX’s first post-grounding flight with media on board, as carriers seek to demonstrate to passengers that the redesigned jet is safe after a 20-month safety ban. The United States lifted the flight ban on the 737 MAX last month, with the U.S. Federal Aviation Administration outlining details of the software, system and training upgrades Boeing and airlines must complete before carrying passengers. After the lifting of the ban, American Airlines had said it would return 737 MAX jets to passenger flights by the end of 2020, with a daily flight between Miami and New York City. Boeing’s best-selling jet was grounded in March 2019 after two crashes in five months killed a combined 346 people, marking the airline industry’s worst safety crisis in decades. Gol, Brazil’s sole operator of the 737 MAX, said the first flights of the jet would be on routes to and from the company’s hub in Sao Paulo.