Brian Abraham said:
"An interesting discussion. Our company employed a few senior ex army Blackhawk instructors and jack stall was a frequent topic of theirs and related a number of accidents which were a result of the phenomema. Until their employment I had never heard of the term. They also told of how it was demonstrated to pilots under going conversion onto the Blackhawk. In light of your comment Nick it would seem that an educational program may be in order."
OK, Brian. Let the education begin here. There is NO Jack stall in any Black Hawk, nor in any modern Sikorsky type. There are NO accidents caused by, related to or involving jack stall.
Maybe you could have those guys who you think said this log in and share their thoughts, I would like to discuss it with them and clear up the misunderstanding.