; (2) applications for special flight authorizations for flights operating at supersonic or hypersonic speed, as described in section 91.818 of such title; (3) the environmental impacts of developmental and airworthiness testing operations; (4) requiring applicants to include specification of proposed flight areas; (5) the authorization of flights to and from airports in Class D airspace within 10 nautical miles of oceanic coastline; (6) developing the vertical limits at or above the altitude necessary for safe supersonic and hypersonic operations; (7) proponent-provided data regarding the design and operational analysis of the aircraft, as well as data regarding sonic boom overpressures; (8) the safety of the uninvolved public