Saw a video today, of someone flying a little bird with 1 or 2 engineers riding shotgun. The guy went 95-0 kill/death ratio. Yes the guy was a very good pilot, and yes the helicopters are way overpowered when passengers can repair them while flying.
That will keep happening until they repatch the shoulder launched AA or remove the ability to repair while in flight (My preference).
I remember using this very trick in BFBC2 while in the Blackhawks. The difference is that in BFBC2 you had to aim your repair tool at one very specific spot. In BF3 you can practically aim in the sky and still repair. Even with two engineers working on my Blackhawk we were never able to take over a map like the scout choppers in BF3 can.
Regardless of whether or not a precedent has been set for this in previous BF game isn't the issue. The issue is that the maps with scout choppers can easily become a spawn camp fest. Flying repairs are becoming the new circle strafing. In my opinion this is a bad thing.
I think you can get them down with someone spotting in a tank with guided shells... I'm not positive on this... possibly 2 tanks with guided shells?
Looks like one or two guided javelins will do the trick as well... Seems that teamwork is the key.
The point is that the shoulder fired sams should not be rendered ineffective by the game mechanics. What's the point of even having them in game if you can pretty much completely negate them. I might as well run around with a javelin, at least if I don't have a chance to shoot at aircraft, I can take out a tank or two. Why is an antitank weapon more effective against aircraft than an anti-aircraft weapon? Not to mention that in real life, the weapon helicopter pilots fear most is a shoulder fired missile since it is so hard to defend against (I spent 6 years as an intelligence specialist in various Marine Corps helicopter units, I know what helicopter pilots are concerned about.) The mechanic is not balanced (I know in games like this balance sometimes trumps realism), nor is it realistic.