By Shivansh Tiwary and Doyinsola Oladipo NEW YORK (Reuters) -More travelers are checking the model of an aircraft before booking flights after a midair cabin blowout forced a new Alaska Airlines-operated Boeing jet to make an emergency landing and grounded more than 170 planes, several travel operators said. A piece of fuselage tore off the left side of the 737 MAX 9 jetliner operated by Alaska Airlines as it climbed following takeoff on Friday, forcing pilots to turn back and land safely with all 171 passengers and six crew on board. U.S. regulators have since grounded 171 737 MAX 9 planes fo…