Flying as I do from an airfield with a lot of big helicopters :-) made me wonder if there is any official (or at least useful) document on rotor downwash? There's the AIC on wake turbulence (
http://www.nats-uk.ead-it.com/aip/cu...9_P_064_en.pdf) but there doesn't seem to be an equivalent one on the effects of rotor downwash on light aircraft.
ATC often give 'caution rotor downwash' (e.g. taking off yesterday behind a big helo which had been hovering mid-runway, and landing behind one ditto).
I bounced on that first landing yesterday and had to go around but I don't think that was the rotor downwash
Tim