Authorizes assessing units to provide a real property tax exemption for private airports

Allows cities and towns to pass a local law or resolution, subject to permissive referendum, to allow a real property tax exemption for privately-owned, public use airports; provides the percentage of exemption would be specified in the law or resolution; provides the exemption would be limited to improvements to the airport used for takeoff, landing, taxiing and open air parking of aircraft, air navigation or communications facilities and passenger terminals available to the public without charge.