Indiana Code Title 8. Utilities and Transportation § 8-21-10-1

Sec. 1. The safety, welfare, and protection of persons and property in the air and on the ground and of the maintenance of electronic communication within this state requires that the navigable airspace overlying the state and the approaches to and the air traffic pattern area of any public-use airport in the state be maintained in an unobstructed condition for the safe flight of aircraft and the comfort and safety of the citizens of this state. To that end, the location and height of structures and the use of land related to those structures and near public-use airports is regulated.