>>Please tell me more about those dangerous "downwind turns".
As before, it is the wind gradient that is dangerous, rather than the turn. Its like taking off in calm conditions and climbing up into a 50kt tailwind. The instantaneous effect of the wind gradient on your airspeed can be catastrophic.
Likewise turning into wind onto final, in a long-wing glider, in a region with a strong wind gradient. The upper wing can have more airflow than the lower, resulting in a turning force greater than the ailerons can counter. And since landing on the wingtip is not the approved arrival technique, the landing becomes rather exciting. (The solution is more airspeed.)
All useful things that a modern ATPL will never learn or directly experience. But knowing the flight sensations of such manouvres may well prove vital if you are - well - plummeting down at 10,000 ft per min over the Atlantic in a large jet with your nose pitched 15 degrees up, and not understanding the situation.
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