Theres been tons of complaints about this since dice took it upon themselves to nerf the damage the missiles do, big deal if you get a single hit, thanks to their patch it doesnt even disable the aircraft anymore, all they have to do is fly away, regenerate and come back.
It was bad enough pre patch with trying to get a hit with the stealth lockon but at least if you did you were rewarded with heavily damaging the aircraft, at the minute you do something like 45% damage, and thats it.
It's a good job jets aren't a threat to infantry at all then isn't it.