Lack of Oxygen in Cockpit Eyed in Mysterious Virginia Jet Crash

The Cessna 560 Citation traversed some of the most sensitive government sites near Washington.

Alan Levin

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Crash investigators face a difficult task dissecting what happened aboard the private jet that cruised up and down the US East Coast on Sunday with an incapacitated pilot, especially if the cause was a lack of oxygen.

The Cessna 560 Citation V carrying a Hamptons real estate agent, her daughter and a nanny flew for about two hours without responding to radio calls before finally slamming into mountainous terrain in Virginia at high speed.