NTSB: Helicopter likely had technical issue before deadly DC midair collision near DCA

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LIVE: NTSB gives update on plane and helicopter crash near D.C.

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NTSB: Helicopter likely had technical issue before deadly DC midair collision near DCA

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NTSB: Helicopter may have had technical issues before deadly DC midair collision near DCA

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NTSB: Helicopter likely had technical issue before deadly DC midair collision near DCA

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NTSB: Helicopter likely had technical issue before deadly DC midair collision near Potomac River

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NTSB: Helicopter may have had technical issue before deadly DC midair collision near DCA

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NTSB: Helicopter likely had technical issue before deadly DC midair collision near DCA - WPMI NBC 15

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NTSB: Helicopter likely had technical issue before deadly DC midair collision near DCA

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NTSB: Helicopter may have had technical issues before deadly DC midair collision near DCA

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NTSB gives update on DC plane-helicopter crash investigation

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Helicopter may have had technical issues before crash NTSB reports

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