I chased him for a long time in a plane, 30-40mins? He even flew out of mission zone many times so we respawned after a few seconds. But he kept his damage so eventually I almost had him shot down when another plane suddenly swept by and did the last killshot (Nick?). He ejected in a parachute, I jumped after him and i had to chase him on the ground and kill him (shortly after landing in a parachute).
Doing the plane manouvers to get on his tail was hard but not impossible but it sure was a struggle with using the keyboard. Warthunder is much easier to fly a plane and do combat manouvers with a keyboard.
Plane mechanics sucked. I tried 7-8 times before I accidentally found an easier way.
My Plane was badly damaged and going down so I bailed out (you need the parachute perk). Landed right by the run way that you start off from and he will keep trying to straff you. At first I tried shooting him down with sniper rifle I happened to be carrying. Did okay but ran out of ammo with him still with half his health. the M4 lookalike rifle I was also carrying was useless. Ran out of ammo with that, and then discovered a fixed machine gun nest up a ladder on the roof of the ranch building. Took him out with that in two passes, then just had to chase him down on foot when he bailed out and shot at him with my side arm until he died. Wish I’d known about the machine gun nest earlier ;-)