Fatal traps for helicopter pilots
Have not read the book in awhile "Fatal Traps for Helicopter Pilots" but I recall the situation when a ships salvage crewmember jumped from the ship to the hovering aircraft and created a rollover situation. I believe it was a 500 and the salvage crewmember was new and forgot the briefing for the process of getting on/off the ship.
Not the normal situation as taught likely to occur on flat surfaces but the basic formula, pivot point, rolling motion, exceeding critical angle where as you wont recovery.