[_Tim_]

I've seen this a lot because I always use helicopters. Normally the heli stays in the same hex for the rest of the game. On rare occasions it does come back to player control, but usually only for a turn. No idea why or how, but it is worth checking it every turn because if you get control back for one turn the heli can be moved to a safer place or taken off the map. This is a good idea if it is a core unit. Sometimes a stuck heli will be discovered and shot down.

cheers,

Tim