(a) This subchapter is supplemental to any provision of federal law pertaining to the design, construction, operation, or maintenance of a vertiport designed or constructed with a grant under 49 U.S.C. § 47101 et seq.
(b) A provision of this subchapter found in conflict with or otherwise preempted by federal law shall be null and void without invalidating any other provision of this subchapter, and to this end the provisions of this subchapter are severable.