US safety agency cites 'metal fatigue' in Boeing 777 incident

New York (AFP) – A key US safety regulator said Friday initial investigations confirm metal fatigue was a factor in last month’s scare when a Boeing 777 engine caught fire and rained debris on houses below. But the National Transportation Safety Board (NTSB) said it has not reached a final conclusion on the causes of the incident involving Pratt & Whitney engines. The United Airlines flight to Hawaii returned to Denver soon after disembarking after the engine caught fire and began breaking apart. No one was hurt in the incident, but the episode raised questions about maintenance on the jets. T…

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