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3 big takeaways from the NTSB hearing on the DCA midair collision (www.npr.org)

submitted 3 days ago* (last edited 3 days ago) by Davriellelouna@lemmy.world to c/usa@midwest.social

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[–] HootinNHollerin@lemmy.dbzer0.com 1 points 3 days ago

Barometric pressure based altimeter can’t be used at low altitudes due to reading low. Helicopter should have been using radio based altimeter. Helicopter was at least 125 feet higher than the upper limit for that airspace