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The seatbelt light is ON...

submitted by SFOGuy

9 years 3 months ago

This a rather interesting take on the wake turbulence set up by the rotors of a Blackhawk helicopter (MH-60).

Here, a single engine Cirrus (SR-22, maybe?), makes an approach 25 seconds AFTER the helicopter has departed from a touch and go landing ---and the results are, well, bad.

It was a Fort Collins, CO, if anyone is interested.

NTSB report below.

Everyone was Ok---except the airplane.

http://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20141208X21730&key=1&queryId=b97951e9-8f17-4bde-b858-c0124da048fd&pgno=28&pgsize=200

Engineering because: wake turbulence.

BTW, one of the reason the Coast Guard asks how many people are involved in an emergency, is because they will dispatch the smallest practical helicopter to the emergency---apparently sending a MH-60/SeaHawk to everything means the rotor turbulence will be awful, the hoist lifts of survivors more difficult---unless you need the big bird, don't send it...