Michigan Compiled Laws, Chapter 259. Aviation § 259.89

Sec. 89. Sections 86 and 87a 1 do not apply to landing areas designated and operated for private use if commercial operations are not performed on the landing areas. A landing area for private use shall not be established, without commission approval, within 5 nautical miles of a public use facility certified by the commission or that would violate section 87.  2