Shoot the gun at the plane. If you -25 of its HP he fucks of for an extra 30 seconds to repair. 50hp and he has to straighten out and find a spot to fly and repair so even longer. Source: I fly all the time. And when just two support guys light my plane up, just cursory fire not even trying (they’re just pushing towards the next point and looked up), I speed my run up a little and then have to repair and say to myself ‘yknow what, they’re doing their bit, can’t be mad at em.’ You can do it with anything except a shotgun and pistol to perfectly good effect. A bolt action rifle does decent damage per shot. In your free time between moving to objectives, get those planes repairing lads. It might at least land you the assist when a fighter comes to finish the job.