Air Transport Road Transport Railway Transport Sea Transport Economical over short distances. Average operational flexibility High maintenance cost for both vehicles and infrastructure. Low investment. Uneconomical for long distances. The movement of passengers and cargo by aircraft such as airplanes and helicopters Using air transport for international trade is the quickest way to ensure product delivery and distribution. It is also the safest methods of transport, and you could export or import a variety of goods through this mode. Useful for transporting costly and light- weight consignments. C&F Agents. Its more suitable for transportation of perishable goods. Documents required for air transport – Commercial invoice, Airway Bill (AWB), Performa invoice, Bill of lading, Generic Certificate of Origin, Packing list, Inspection certificate