IIRC, it was "Lessons Learned" and was put together by the folks at B53 Camp Long Thanh.
There was also a post in here a couple of years ago:
http://www.professionalsoldiers.com/...d%22#post93450
Terry,
The "Overspeed Issue", was a Main Rotor. We operated High and Hot in Laos!! We could only carry 4 folks per ship. Hence the question of if they could carry 6 out!! My 12 man team took a flight of at least 9 Slicks!!! Three for us and six more to haul us and the 4 man crews out if things went south!!