Model Aerosport SA Inc. (MASA) is the official body representing South Australian Aeromodellers.  The charter of MASA is to promote, coordinate and encourage aeromodelling activities. MASA consists of an affiliation of all South Australian aeromodelling clubs. Local and state competitions, fun flies and other events are coordinated by the MASA committee. Where appropriate the committee, liaises with Federal and other State aeronautical bodies. The Executive Committee is elected annually and meetings of the Executive and the Committee are held on a monthly basis.

Representatives on the committee include members of Special Interests Groups such as Control Line, Free Flight, Radio Control, Scale Aircraft, Pylon Racing, Gas Turbine powered models, Helicopter, Electric and other specialized aeromodelling interests.