Denver aircraft engine fire consistent with metal fatigue in fan blade, investigators say
Metal fatigue in the fan blades can be behind the engine damage from a Boeing Jet in Denver over the weekend, said the US National Transportation Safety Board.
The Pratt & Whitney engine caught fire shortly after takeoff on a United Airlines Boeing 777-200 during a flight from Denver to Honolulu with 231 passengers and 10 crew members on board. The pilots called in May and returned to Denver.
The next day, Dozens of 777 aircraft were grounded after Boeing said those with Pratt & Whitney PW4000 engines should not be used until full inspections can be done.
National Transportation Safety Board (NTSB) chairman Robert Sumwalt said Monday a preliminary assessment showed the damage was compatible with metal fatigue and that the blade fell on Tuesday at a …