Hey Messiah,
i'm afraid it's not going to be easy, because the sounds are not that good, and the rottor failure sound has to be faked, and that takes time and a lot of experimenting.
Anyway i'm willing to give it a go, but i need to know a couple of things first.
Is this going to be heard inside or outside the chopper (or bouth)? If is outside, what distance?
Since the sounds are not great, it could work if heard from a distance, but could be poor for a first person view inside the chopper.
Have you any other chopper sounds we might use for this? And what chopper are we talking here?
Thouse sounds can work for a small bird, not for a big one i'm afraid.
Sory for all the questions, but if i know precisely what you want to do, i'll probably come up with a better solution.
Hope to hear from you soon.
RP