73-year-old British grandfather traveling on a dream vacation with his wife was identified as the man who died of a heart attack after a Singapore Airlines flight plunged more than 6,000 feet on Tuesday.

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Geoff Kitchen, of Gloucestershire, was beginning a six-week tour of Asia and Australia with his wife, Linda, when their Boeing 777 flight hit severe turbulence and plummeted thousands of feet in the span of five minutes, the Sun reports.