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Flightradar24 on Twitter: "#PO717, Los Angeles-Tokyo, descended to FL250 and is now near Petropavlovsk-Kamchatsky. First squawked 7600 (radio failure), now squawking 7700 (general emergency). https://t.co/z558W4YvQm For more information on 'Squawking ...
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Loss of Communication
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