maricopa association of governments regional aviation system plan update 2 1 working paper no draft september 2001 demand forecasts the activity projections presented in this are used to determine role airports within mag evaluate ability existing accommodate projected and future airside landside facilities for development a comprehensive public use requires general understanding recent anticipated trends industry as whole national statewide can provide insight into s review that could specifically impact commercial service primary importance some will undoubtedly have greater on than others there is also possibility discussed might pronounced region environment following sections discuss