The sp_helicopters.rar file you have requested: Modifications / Single Player / Singleplayer Helicopter Mod - 2.43mb is not available. Perhaps try browsing all files for the game Battlefield 2 and upload any files you want to share or are missing. This is the only information we could locate:
This file includes modified tweaks which allow you to have pilotcontrolled weapons in the different helicopters.These helicopter tweak files are for your own SP mod only. You will not be able to use these multiplayer online.The sp64 mod is Kitfox has created a singleplayer mod that allow you to control all the weapons and fly at the same time.