First, the demand for transportation of dangerous goods is on the rise. With the rapid development of social economy, a large number of new electronic and chemical products have emerged. The demand for international and high-speed transportation of these new products is just in line with the characteristics of air transportation. In the air freight agency circle, some goods eager to be shipped out often accept very high freight rates. In this case, some agents, airlines and airport employees may give up the bottom line of safety for the sake of interests; At the same time, some airlines and air transport operators have insufficient knowledge and skills of dangerous goods, which objectively increases the risk of collection and transportation, and makes some dangerous goods that are intentionally or unintentionally falsely reported or concealed in the state of blind transportation;
Second, the necessary risks brought by air freight. In the long development period of civil aviation cargo industry, passenger aircraft belly compartment and point-to-point transportation have been the main modes of transportation. However, with the rapid development of the express industry and the service of all cargo aircraft, in the transport of dangerous goods, all cargo aircraft have exceeded the belly compartment of passenger aircraft. Meanwhile, multimodal transport modes such as truck flights, air land transport and transit and consolidation have been emerging. In some places, the cargo and postal articles transported by all cargo aircraft are neglected in such links as receiving and transportation, security inspection, loading and unloading. Meanwhile, the multimodal transport mode has brought about the problem that different transport modes have different risk tolerance;
Third, the types of air cargo have become more complicated. In the past, most of the air cargo was of single variety, consistent packaging and simple nature, which had little pressure on the collection and transportation and security inspection. As express cargo and air mail surpass ordinary cargo and become an important source, the complex variety, different packaging and unknown nature of cargo and mail have brought great pressure to the collection, transportation and security inspection.
