Helicopter Vortex wake.???
Just out of interest, has anyone who flies light singles, ever experienced vortex wake when landing behind a medium twin helicopter?
Hypothetical situation:-
2 medium twin helicopters landing one after another with about 4 miles spacing between them. wind less than about 6kts. Light a/c follows to land behind them, spacing unknown. What are the chances of the light a/c being affected by the helicopter vortexes, if any?