Mich. Comp. Laws § 259.402: Special aeronautical planning fund; expenditure.

Sec. 2.

Said appropriation shall be credited to a special fund to be known as the "special aeronautical planning fund". Moneys may be released from said special fund from time to time by the state administrative board to the director of aeronautics, upon his request for planning, survey, engineering services and development of airports and landing fields within this state.