It's June 83 and my OPP is the US and is using a mixture of the AH-6J LBirds and the UH-1D Huey's. I've shot down several but several more have taken at least 3 points of damage and are still flying over the field of battle. Some of them have been hit for additional 1+ points here and there.
They all seem to run away when hit but not off the map (they are still in visual most of the time). I foolishly didn't purchase enough ADA stuff.
I believe they both can take 5-6 points of damage before being destroyed.
My point was I haven't seen too many run away that often where they actually leave the map that many others have reportedly seen.