RIO DE JANEIRO - Commercial flights with Boeing 737 Max jetliners resumed Wednesday for the first time since they were grounded worldwide following two deadly accidents nearly two years ago.Brazil’s Gol Airlines became the first in the world to return the planes to its active fleet, using a 737 MAX 8 on a flight from Sao Paulo to Porto Alegre, according to flightradar24.com.A Boeing 737 MAX of Brazilian airline Gol lands at Salgado Filho airport in Porto Alegre, Brazil on December 9, 2020. - More than 20 months after it was grounded following two deadly crashes, Boeing's 737 MAX returned to the skies Wednesday with an i The company's own announcement didn’t specify the route of the flight.Gol is set to start regular service on Dec.