HB 2521 establishes regulations for vertiports, which are infrastructure facilities designed for vertical takeoff and landing aircraft, including those used in advanced air mobility services. The bill requires vertiports open to public use to comply with Federal Aviation Administration (FAA) standards and mandates that their layout plans be approved by the FAA before operations can begin. It also restricts local governments from granting exclusive rights to vertiport operators and directs them to ensure reasonable access to these facilities for authorized air mobility providers.