Cellular absorption
Hihover, at thew time we were well below max weight, had been flying for an hour and were doing some hover practice. The problem did not become apparent for about a minute or two, why should we be able to hover with no problem for the first thirty seconds or so and then experience a need for more power? Surely cellular absorption would have occured immediately? Not trying to be pedantic but it seems that it would take a while for the pollen to build up on the blades and hence the need for power would increase as the amount of pollen attracted to the blades increased.
Al.