UPDATE 5-Damage to United Boeing 777 engine consistent with metal fatigue -NTSB
(Adds details of South Korea inspections)
By David Shepardson and Jamie Freed
WASHINGTON, Feb 22 (Reuters) – Damage to a fan blade on anengine that failed on a United Airlines Boeing 777 flight isconsistent with metal fatigue, based on a preliminaryassessment, the chairman of the U.S. air accident investigatorsaid on Monday.
The Pratt & Whitney PW4000 engine failed on Saturday with a”loud bang” four minutes after takeoff from Denver, NationalTransportation Safety Board (NTSB) Chairman Robert Sumwalt toldreporters following an initial analysis of the flight datarecorder and cockpit voice recorder.
There was minor damage to the aircraft body but nostructural damage, he said.
He said it remained unclear whether the incident isconsistent with an engine failure on a different Hawaii-boundUnited…