Some information about Flan's Mod 1.6.4/1.6.2/1.5.2 that you can need before installing

Description:

Flan’s mod is a combination of Planes, Vehicles and WW2Guns rewritten with a whole load of awesome new features and designed to allow easy custom content creation by anyone. Flan’s mod alone is useless, it requires content packs in order to be of any use. ...

Detail and Download here : Minecraft mods 1.7.5/1.7.2/1.6.4