1) The process by which airspace options are selected and applied to meet the needs of the ATM community.
2) A planning function with the primary objective of maximizing the utilization of available airspace by dynamic time-sharing and, at times, the segregation of airspace among various categories of users based on short-term needs.
1) ICAO, doc 9882 Manual on Air Traffic Management System Requirements 2008, 1st ed., p. F-1
2) ICAO (2002), "International Civil Aviation Vocabulary", Doc. 9713
Regulation (EC) No 549/2004 of the European Parliament and of the Council of 10 March 2004 laying down the framework for the creation of the single European sky (the framework Regulation)
Lexicon Release 2015.2