I recently viewed an episode of "3 Minutes of Aviation" and was surprised to see the impact the wake turbulence of a UH-60 Blackhawk had on control of a Pilatus PC-12 apparently attempting a landing:
I wondered if this topic had been discussed on PPRuNe and it has, but under a title where it isn't obvious:
SAR Pilot/Crew Training
That thread has a good video of a BEA presentation on the risk of helicopter wake turbulence with examination of the fatal accident of a paraglider when its canopy collapsed after encountering wake turbulence. You can understand a paraglider being sensitive but a Pilatus PC-12 is hardly a small aircraft.
Then I found a video of a Cessna 120 accident while attempting to land behind a UH-1 Huey which is is embedded within:
https://www.avweb.com/multimedia/bes...torwash-crash/
Within this item there is footage of a Cirrus SR-20 crashing on attempt to land some 30 seconds behind a departing UH-60 Blackhawk helicopter at Fort Collins, Colorado:
The dangers of flying through rotor wash - FlyTime.ca
I was also reminded of old one page articles on helicopter wake turbulence that appeared in Aviation Safety Digest 104/1978 (page 11) and 121/1984 (page 3):
https://www.atsb.gov.au/sites/defaul...asd_104_78.pdf
https://www.atsb.gov.au/sites/defaul...asd_121_84.pdf
Makes me wonder if this is a more common issue?