Hi kindly see this hover video, in last few seconds heli suddenly plunged.. ... It was windy yesterday but I fail to understand Y it happened?

Actually it keep on plunging when it's near me, and keep on pushed high when a little far from me!!! ... I have'nt changed throttle or pitch!!!

wots the reason ?

it is majorly beacuse of wind affect as we tend to bring the throtte down and the heli does not respond immidiately (because of wind it keeps floating ) and when suddenly the wind shifts it falls down.