On Sunday, February 21, United Airlines Flight 328 heading to Honolulu in Hawaii had to make an emergency landing at Denver International Airport after its right engine blew apart just after takeoff. Pieces of the casing of the engine, a Pratt & Whitney PW4000, rained down on suburban neighbourhoods.The plane with 231 passengers and 10 crew onboard landed safely, and nobody aboard or on the ground was reported hurt, authorities said.The Federal Aviation Administration FAA Administrator Steve Dickson said in a statement on Sunday that based on an initial review of safety data, inspectors had "concluded that the inspection interval…