(FILES) In this file photo taken on March 13, 2019 an American Airlines 737 Max sits at the gate at LaGuardia airport in New York. - American Airlines said July 10, 2019 the grounding of the Boeing 737 MAX reduced second-quarter earnings by $185 million even as the company raised a key revenue benchmark because of strong consumer demand. American, which has 24 of the MAX planes in its portfolio, previously estimated that the grounding would hit 2019 earnings by $350 million. The carrier has extended its grounding to September 3 due to uncertainty over when the plane will be returned to service after two deadly crashes. (Photo by Don Emmert / AFP)