Transportation Department, Federal Aviation Administration
FAA invites public comments about our intention to publish an advisory circular. This Advisory Circular (AC) provides guidance to demonstrate compliance with the design, test, and documentation requirements for a Reduced Reliability Flight Safety System (RRFSS) of commercial space launch or reentry vehicles. This AC presents one acceptable means of compliance (MOC), but this is not the only acceptable MOC. Launch and reentry license applicants may use this AC to guide their internal processes, format their license applications, or both.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation Federal Aviation Administration 14 CFR Part 450 [Docket No. FAA-2025-0798] ( printed page 20414) AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Notification and request for comments. SUMMARY: FAA invites public comments about our intention to publish an advisory circular. This Advisory Circular (AC) provides guidance to demonstrate compliance with the design, test, and documentation requirements for a Reduced Reliability Flight Safety System (RRFSS) of commercial space launch or reentry vehicles. This AC presents one acceptable means of compliance (MOC), but this is not the only acceptable MOC. Launch and reentry license applicants may use this AC to guide their internal processes, format their license applications, or both. DATES: Written comments should be submitted by June 13, 2025. ADDRESSES: Please send written comments: By Electronic Docket: www.regulations.gov (Enter docket number into search field). By mail: Charles Huet, 800 Independence Avenue SW, Room 331, Washington, DC 20591. FOR FURTHER INFORMATION CONTACT: Charles Huet by email at: Charles.huet@faa.gov ; phone: 202-267-7427. SUPPLEMENTARY INFORMATION: I. Authority The Commercial Space Launch Act of 1984, as amended and codified at 51 U.S.C. 50901 through 50923 , authorizes the DOT, and the FAA through delegation, to oversee, license, and regulate commercial launch and reentry activities, and the operation of launch and reentry sites as car…
Citation: 90 FR 20414
