would they have undergear if they were AI's? quite a few missions appear that way, even the recent ones, the fox four ones P**S me off for the same reason, do a good mission, make a good landing & your hit up the ASS by a wingman :'(
As Mathias points out, the gear animation does not function on older FSDS1 aircraft when used in AI. The Fox Four aircraft were all created with FSDS2 & all animations function in AI. If you let the wingmen land first they won't hit you up the ass.

Have you ever noticed the wild gyrations in the sky by some planes after you've shot them down? see it in CFS too, not in every mission just the odd one, think one of the fox four ones has it ,cant remember which one tho'
If you can remember which Fox Four aircraft does this I'll get it checked out. We take great care to get this right & to my knowledge nobody has reported this problem before. If it's not reported we can't fix it.