2023-12454

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-2019-0218; Amdt. No. 25-148] • RIN 2120-AL15 AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: This final rule amends certain airworthiness regulations applicable to cabin pressurization systems and oxygen dispensing equipment on transport category airplanes, to facilitate certification of those airplanes, systems, and equipment for operation at high elevation airports. This rule eliminates the need for certain equivalent level of safety findings and exemptions. DATES: Effective July 17, 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: Robert Hettman, Aircraft Systems Section, AIR-623, Technical Innovation Policy Branch, Policy and Innovation Division, Aircraft Certification Service, Federal Aviation Administration, 2200 S 216th Street, Des Moines, Washington, 98198; telephone and facsimile 206-231-3171; email robert.hettman@faa.gov. SUPPLEMENTARY INFORMATION: 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 agency'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. It prescribes new safety standards for the design and operation of transport category airplanes. I. Overview of Final Rule This final rule amends two sections of title 14, Code of Federal Regulations (14 CFR), part 25. First, the rule amends § 25.841, “Pressurized cabins,” for airplanes equipped with cabin pressurization systems intended for operations at airports with elevations at or above 8,000 feet. The FAA considers airports with elevations greater than 8,000 feet as “high elevation airports.” Section 25.841(a) still requires that cabin pressure altitudes do not exceed 8,000 feet under normal operating conditions, while the revisions allow cabin pressure altitudes to exceed 8,000 feet during takeoff and landing at high elevation airports. In addition, changes to § 25.841(b)(6) allow applicants to increase the threshold for activation of cabin pressure altitude warnings to altitudes above 10,000 feet, to prevent nuisance warnings to the flightcrew during takeoff and landing at high elevation airports. Second, this rule amends § 25.1447, “Equipment standards for oxygen dispensing units,” for airplanes equipped with passenger oxygen systems intended for operations into or out of airports with elevations above 13,000 feet. The revisions to &…

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