Hi, the reason I launched an ER first is to make him start evading. When he is in combat mode and his aspect continuously changes, the missile loses track. But after posting that topic, I saw at other aircrafts that if they turn off their afterburners at the same conditions, the missile loses track. Still, I encountered many other situations where I don't know if AI changed it's rpm or not, but still managed to make the missile travel at a straight trajectory and didn't even track... Here is Tacview gif of that, but I'll try to find a .trk file for it. It may be long since it's a mission .trk file...