国际民航组织期刊

No. 3

The ICAO concept of required navigation performance (RNP) is being revised in light of industry demands for performance-based navigation (PBN), a concept that encompasses both area navigation (RNAV) and RNP (see page 5). Also appearing in this issue (page 9) is a look at implementation of RNAV and RNP procedures in the United States, where the move to PBN has already demonstrated capacity improvements and other important enhancements.