92 Ill. Adm. Code 14.500
Airport Classification
Section 14.500 Airport Classification
Airports and Ultralight/Short Takeoff and Landing (STOL)
Airports shall be classified as public-use or private-use. For purposes of
this Subpart E, the word "airport" includes Ultralight/STOL
airports. The minimum standards for the establishment, management or operation
of airports shall be in accordance with this Subpart E, including the minimum
dimensional standards for airports as shown in Section 14.Appendix A,
Illustrations A, B, C and D.