Malaysia Airlines confirms that it has lost contact with flight MH17 from Amsterdam.
"The last known position was over Ukrainian airspace," the carrier posted on Twitter. "More details to follow."
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Boeing says it is "aware of reports on MH17" and is "gathering more information".
Flightglobal's Innovata schedules show MH17 is a daily flight operated by a Boeing 777-200ER.
Source: Cirium Dashboard