Federal aviation officers ordered “stepped-up” inspections of some Boeing 777 plane Sunday after an engine failure on a United flight from Denver caught fireplace and fell aside, scattering particles in a Colorado neighborhood earlier than touchdown safely.The inspections would apply to 777s geared up with Pratt & Whitney mannequin PW4000 engines, mentioned Steve Dickson, the Federal Aviation Administration administrator.Dickson mentioned he made the choice — which can seemingly take away some plane from service — after consulting with a staff of aviation security consultants.“Based on the preliminary data, we concluded that the inspection interval needs to be stepped up for the hole fan blades which can be distinctive to this mannequin of engine, used solely on Boeing 777 airplanes,” he mentioned.United mentioned it was instantly grounding its fleet of 24 Boeing plane geared up with the Pratt & Whitney engines. The airline mentioned it was working with federal investigators and regulators and that it anticipated a small variety of prospects to be inconvenienced throughout the swap.Federal officers mentioned that solely the United States, South Korea and Japan use planes with the PW4000 engine, and United is the one American airline that makes use of them.Reuters, citing Japan’s Aeronautical Service Information Center, mentioned that nation additionally halted plane from flying with Pratt & Whitney engine.Neither Boeing nor Pratt & Whitney instantly responded to a request for remark.Video from a passenger on United Flight 328 — which was carrying 231 individuals to Honolulu on Saturday — confirmed one of many airplane’s flaming engines falling aside within the sky. A pilot on the flight reported a “mayday” and instructed air site visitors management the airplane had had an “engine failure,” authorities mentioned.Large items of steel fell right into a neighborhood in Broomfield, Colorado, although there have been no studies of accidents. The pilot turned the airplane round and landed safely at Denver International Airport.Tim Stelloh is a reporter for NBC News based mostly in California.