Aircraft that are loading and unloading on state airports will be parked in the available designated aircraft parking or loading areas. In the event such designated areas are fully occupied, pilots will park so as to remain clear of the defined runway. All unattended aircraft will be tied down when tiedowns are available. Persons parking their aircraft where tiedowns are not available will secure their aircraft with portable tiedown devices, or use other positive means of restraining their aircraft which will assure that their aircraft will not damage other aircraft or property. Aircraft will not remain tied down on an airport in excess of one (1) month without the approval of the Division.
Idaho Admin. Code r. 39.04.01.201