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).
Repairing the helicopter in flight has been a staple of the Battlefield series. Used to do it all the time in BF2, BF:BC and BF:BC2. The fact that it can be done in BF3 really isn't an issue to me.
I only have experience with BFBC2 and BF3, but I avoided the maps in BFBC2 that had aircraft because the helicopters were so overpowered that if one player on either team was a competent pilot and the other team didn't have a pilot to counter, that team could pretty much take over the map. It's really not fun even if you are on the team with the good pilot, very much less so when you are on the other team. You shouldn't be able to take over the game with a helicopter to the point that the other team is powerless against you. Nobody should be able to go 95-0. I saw a video where someone did, and he made it look routine. I'm sure he has games like that quite often. I've been in a few games where we mounted a coordinated assault on the helicopter that was controlling the map, and a squad of engineers wasn't able to take out the helicopter because his engineer passengers could repair him fast enough that he was able to fly out of range before he was taken out. A helicopter can do many things to avoid being targeted. It can fly out of range, hover behind buildings and terrain, take out the targeting person/device and drop flares. All that plus being able to repair with no down time is a bit ridiculous.
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.