包邮航空情报学

chapter 1 introduction
　1. purpose of an aeronautical information service (ais)
　2. responsibilities
　3. functions
　4. users of aeronautical information
　5. scope of information handled by an ais
　6. organization of an ais
chapter 2 collection of aeronautical information
　1. domestic information
　2. foreign information
　3. channels of communication
　4. screening and distribution of information
　5. basic reference material
chapter 3 notam
　1. origination