in editor:
-set down a WY-hellcat, empty.
-place an AI squad down, and place PLayer down, separate from the AI group
-assign squad as cargo, and use GetIn command, and sync getIn to player approaching Helo
-get in helo, and spin up, and watch as AI approach the helo
-once AI are within the circumference of the Main rotors, the rotors immediately stop

Have had unconfirmed reports, from very reliable sources, that the helo's rotors fall prey to innocuous things like bushes, and even, unbelievably enough, the helo's OWN TAIL ROTOR.

"believed to be a problem with the rotors meshing" said one astute scholar apropos the issue

Also happens when:
Trying to subvert the issue, I waited to spin up until all AI were in the bird. At the time, it seemed to be a successful work around, however, once the desired LZ is reached, and the AI exit the helo, again, the same issue comes about, and the Helo's Main Rotors are destroyed.

BE ADVISED: TESTED WITH OTHER ROTARY AIRCRAFT, WITHOUT THE SAME EFFECT!!! PROBLEM ONLY APPARENT WITH WY HELLCAT