Vistara Flight UK27, en route from Mumbai (BOM) to Frankfurt (FRA), declared an emergency by declaring Squawk Code 7700 and was diverted to Erzurum Airport in Turkey for security reasons on Friday.

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High alert as PA-28 161 Warrior II sounds 7700 'Squawk' at 5,000ft over England A LIGHT aircraft has sounded an emergency 7700 squawk code while flying near London.