Aviation Turbine Fuel import exemption from additional customs duty takes effect immediately under the customs notification. Imports of Aviation Turbine Fuel are exempted from the whole of the additional duty of customs leviable under section 3(1) of the Customs Tariff Act, to the extent equivalent to the Special Additional Excise Duty leviable under section 147 of the Finance Act, 2002. The exemption applies to the specified tariff heading for the described goods when imported into India and comes into force with immediate effect.