(620 ILCS 15/3) (from Ch. 15 1/2, par. 189)
    Sec. 3. Except as otherwise provided in Section 5 of this Act, every individual charged with the responsibility of grounding aircraft shall have the power to control the movement of aircraft upon the ground or surface of a public airport and forbid the taking off of aircraft from or landing at such public airport to any person or persons whenever there is reason to believe that such movement or flight will endanger the public safety, health, welfare or common defense due to the existence of any one or more of the following conditions:
        (a) meteorological conditions,
        (b) condition or qualification of the pilot or any other person or persons involved in
    
the operation of the aircraft,
        (c) condition of the aircraft, the use for which it is to be flown, and the manner in
    
which it is loaded,
        (d) condition of the airport and its facilities,
        (e) aerial traffic and obstructions to flying, or
        (f) a military emergency affecting flight of aircraft or use of the airport.
(Source: P.A. 91-357, eff. 7-29-99.)