2023-06413

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 33 • [Docket No.: FAA-2018-0568; Amdt. No. 33-36] • RIN 2120-AK83 AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: This final rule adds new test requirements to the airworthiness regulation addressing engine bird ingestion. The new test requirements ensure that turbofan engines can ingest ( printed page 19802) the largest medium flocking bird (MFB) into the engine core at climb or approach conditions. To obtain certification of a turbofan engine, a manufacturer must show the engine core can continue to operate after ingesting such a bird while operating at a lower fan speed associated with climb or approach. DATES: Effective June 5, 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: Philip Haberlen, Federal Aviation Administration, Propulsion and Energy Section, Technical Innovation Policy Branch, Policy & Innovation Division, Aircraft Certification Services AIR 624, 1200 District Avenue, Burlington, Massachusetts 01803-5213; telephone (781) 238-7770; fax (781) 238-7199; email: philip.haberlen@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 Title 49, 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 minimum safety standards required in the interest of safety for performance of aircraft engines. This regulation is within the scope of that authority because it creates new safety-related testing requirements for certification of aircraft turbofan engines. I. Executive Summary A. Overview of Final Rule The FAA is amending the airworthiness regulations related to engine bird ingestion testing in part 33 of title 14, Code of Federal Regulations (14 CFR) (notice of proposed rulemaking (NPRM) published at 83 FR 31479 on July 6, 2018). This final rule revises § 33.76 to create an additional bird ingestion test for turbofan engines. This new test ensures that engines can ingest the largest MFB required for bird ingestion testing into the engine core [1] at climb conditions. If the engine design is such that no bird material would be ingested into the engine core during the test at climb conditions, then the rule requires a different test at approach conditions. The new testing required by this final rule consists of ingesting one MFB, equivalent to the largest bird required by § 33.76(c), for the engine inlet throat a…

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