I'm very sorry for resurrecting a very old thread, but I've noticed the exact same problem - aircraft (usually damaged ones) disappearing from mid-air in the A-Team PTO Campaign. I've also noticed that the problem only occurs when flying against the A6M2 Zero, but I haven't seen it happen for any other aircraft (including other versions of the Zero). I've also tried dropping the graphics, but the problem still occurs when I fly a mission against an A6M2 (I wouldn't imagine this was an issue with graphics quality - I've never seen it happen to any other aircraft other than the A6M2). In campaigns the game crashes, whereas in single missions the aircraft disappear (sometimes also with nearby friendly AI aircraft) and the mission goes on, but the vanished aircraft don't count as destroyed. Like you, I've noticed that this doesn't happen every time an A6M2 is damaged/shot down, but at some point in a mission against A6M2 Zeroes, something seems to trigger it. Did you find a solution to this, Shrikehawk? Thanks.