2023-12416

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 25 • [Docket No.: FAA-2019-0343; Amdt. No. 25-149] • RIN 2120-AL11 ( printed page 38377) AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: The FAA is amending its standards for pressurized compartment loads such that partitions located adjacent to a decompression hole need not be designed to withstand a certain decompression condition. This rulemaking is necessary because, in some cases, it is not practical to design partitions in certain airplane compartments to withstand this decompression condition if it occurs within that compartment. DATES: Effective August 14, 2023. ADDRESSES: For information on where to obtain copies of rulemaking documents and other information related to this final rule, see “How to Obtain Additional Information” in the SUPPLEMENTARY INFORMATION section of this document. FOR FURTHER INFORMATION CONTACT: For technical questions concerning this action, contact Todd Martin, Airframe Section, AIR-622, Technical Policy Branch, Policy and Standards Division, Aircraft Certification Service, Federal Aviation Administration, 2200 South 216th Street, Des Moines, WA 98198; telephone and fax (206) 231-3210; email Todd.Martin@faa.gov. SUPPLEMENTARY INFORMATION: I. Authority for This Rulemaking The FAA's authority to issue rules on aviation safety is found in Title 49 of the United States Code. Subtitle I, Section 106 describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the FAA's authority. This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, “General Requirements.” Under that section, the FAA is charged with promoting safe flight of civil aircraft in air commerce by prescribing regulations and minimum standards for the design and performance of aircraft that the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority as it prescribes new safety standards for the design and performance of transport category airplanes. II. Overview of Final Rule The FAA is amending § 25.365, “Pressurized compartment loads,” in Title 14, Code of Federal Regulations (14 CFR) part 25, “Airworthiness Standards: Transport Category Airplanes.” Specifically, the FAA is revising § 25.365(g) to allow the failure of partitions that are adjacent to the decompression hole. This allowance only applies to the formula decompression hole specified in § 25.365(e)(2). The ability to withstand a hole of this size is typically the most severe decompression load design requirement for small compartments, such as lavatories, private suites, and crew rest areas. With this revision, partition failure is only allowed if (1) failure of the partition would not interfere with continued safe flight and landing, and (2) meeting the decompression condition in paragraph (e)(2) would be impractical. This final rule codifies current practice and will not result in additional costs or significant benefits to airplane manufacturers, but will relieve applicants of some administrative burden—see Regulatory Evaluation below. III. Background …

Fonte: Federal Register (federalregister.gov). Texto original em inglês. Conteúdo sanitizado por segurança.