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Chapter 4 | Access to regional air servicesSouth AustraliaFigure 4.10 shows the intrastate air services on regional air routes in South Australia.There were 26 intrastate routes in 2005. Of these, there were eight routes, each withan average of at least three return flights a week and 18 routes, each with an averageof less than three return flights a week. By comparison, there were 14 intrastate routesin the state in 2000. Of these, there were 11 routes, each with an average of at leastthree return flights a week and three routes, each with an average of less than threereturn flights a week.Figure 4.12 Intrastate air services on regional routes in South Australia, 2005Coober PedyClifton HillsCowarieMungaranieMulkaEtadunnaNappa MerrieOlympic DamMoolawatanaCedunaPort AugustaWhyallaRegional air routes with an averageor at least three return flights a week in 2005Regional routes with an average of less thanthree return flights a week in 20050 250 500Port LincolnKingscoteAdelaideKilometresMount GambierSource:BITRE time series estimates.Figure 4.13 shows changes in intrastate air services between 2000 and 2005 on regionalroutes in South Australia. Air services on only one route increased from an averageof less than three return flights a week in 2000 to an average of at least three returnflights a week in 2005 (see solid blue lines in Figure 4.13). Air services of two routesdecreased from an average of at least three return flights in 2000 to an average of lessthan three return flights a week in 2005 (see dotted blue lines in Figure 4.13).Air services on two routes with an average of at least three return flights a week(see solid red lines in Figure 4.13) in 2001 were discontinued by 2005. These routeswere Adelaide–Cleve and Cleve–Wudinna. Similarly, air services on two routes withan average of less than three return flights a week (see dotted red lines in Figure 4.13)in 2000 were discontinued by 2005. These routes were Wudinna–Adelaide and PortAugusta–Woomera.119