Illinois Administrative Code
Title 92 - TRANSPORTATION
Part 16 - AIRPORT HAZARD ZONING
Section 16.70 - Primary Surface
Current through Register Vol. 48, No. 12, March 22, 2024
a) A primary surface is longitudinally centered on a runway of each applicable airport listed in Section 16.Appendix A. When the runway has a specially prepared hard surface, the primary surface extends 200 feet beyond each end of that runway. When the runway has no specially prepared hard surface or planned hard surface, the primary surface ends at each end of that runway. The elevation of any point on the primary surface is the same as the elevation of the nearest point on the runway centerline. The width of a primary surface is:
b) The width of the primary surface of a runway will be the width prescribed in subsection (a) of this Section for the most precise approach existing or planned for either end of that runway.