How it works now(1.3.0.170):
{F5604100}
Current issues:
1. Each soldier opens and closes the door
2. Everyone crowds around the door in one place
3. Sometimes they board several at a time, and sometimes they just teleport into the helicopter
4. When approaching a helicopter, the AIs for some reason stop for a short time
5. the squad leader sits down first, although he should be the last, since he checks whether everyone has sat down