If posing an operational problem or in order to facilitate snow removal, sweeping operations or other necessary maintenance functions, and at the direction of the Executive Director, the pilot or operator of any aircraft and the owner of any aircraft servicing equipment parked or stored at the Airport shall move said aircraft or equipment from the place where it is parked or stored to any other designated place at the Airport; if the pilot or operator refuses to promptly comply with such direction, the Executive Director may tow or remove said aircraft or equipment to such designated place, and at the pilot's or operator's expense and without liability for damage which may result in the course of such moving.
740 CMR, § 21.25