Airport Authorities 

The Community Airports Act, Public Act 206 of 1957, MCL 259.621, et seq., authorizes two or more counties, cities, villages or townships to form an airport authority to plan, promote, acquire, construct, improve, enlarge, extend, own, maintain and operate one or more airport landings and navigational and building facilities, either within or outside their limits. With the approval of the electors, an airport authority may levy up to 1 mill.

Michigan Department of Transportation = Aeronautics