Abstract:

A solution of TypeX message system used to promote information technology development of China air travel and tourism industry is proposed,filling the vacancy of China civil aviation TypeX message system. TypeB message is widely used to transport the non-real-time reliable information in civil aviation industry;however,it has been faced with upgradation due to defects such as limited message length,inextensible content and so on. Taking full advantage of the extensible characteristics of TypeX message,the life cycle management of TypeX message is accomplished and message looping is prevented;by borrowing the idea of the session from TCP/IP protocol,the reliable method to transfer TypeX message is obtained;by summing-up the error types of TypeB message,the method to deal with the most of TypeX message errors is found. The TypeX message system makes the information interaction between civil aviation IT systems more varied and more reliable,providing more flexible and safer types of access,and proving its broad prospect in airlines,airports and GDS.

Key words: IATA, TypeX, TypeB, GDS, double signature, PDM