MIAMI – American Airlines flew a Boeing 737 Max with paying passengers from Miami to New York on Tuesday, the plane’s first commercial flight in U.S. skies since it was grounded after two deadly crashes. Brazil's Gol airlines operated the first passenger flight with a revamped Max on Dec. 9. United Airlines plans to resume Max flights in February, and Southwest Airlines expects to follow in March. Reports by House and Senate committees faulted Boeing and the FAA for failures in the process of certifying the plane. Some relatives of people who died in the second crash, a Max operated by Ethiopian Airlines, contend that the plane is still unsafe.