No Armed Drones Act of 2012 or NADA Act of 2012 - Amends the FAA Modernization and Reform Act of 2012 to prohibit the Secretary of Transportation (DOT) from authorizing any person to: (1) operate an unmanned aircraft system (drone) in the national airspace system as a weapon or to deliver a weapon against a person or property; or (2) manufacture, sell, or distribute a drone (or a component of one) for such a use.