On consoles prior to the Back to Karkand map pack mobile AA was only available on the Noshahr Canals Rush map for the defending team.
At the start of the round it is located in what I think is called the train yard. Look just to the right of the orange square marking the RU deployment.
A number of the other maps have stationary AA guns but I don't think these count towards leveling up.
In the Back to Karkand map pack Wake Island definitely has them in Rush for the defending team. Again, they are usually towards the back of the base. The first one is by the bridge (Roughly marked with Google Maps).
According to the IGN BF3 Wiki the 9K22 TUNGUSKA-M and LAV-AD don't appear on any other maps on the consoles.