2025-14779

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 29 • [Docket No. FAA-2024-2383; Special Conditions No. 29-059-SC] ( printed page 37373) AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions. SUMMARY: These special conditions are issued for Sikorsky Aircraft Corporation and Sikorsky Aircraft (Sikorsky) Model S-61A, S-61L, and S-61N helicopters. These helicopters, as modified by Carson Helicopters Inc. (Carson), will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category rotorcraft. This design feature is an overload protection device (OLPD) installed in the hoist. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards. DATES: Effective August 5, 2025. FOR FURTHER INFORMATION CONTACT: Scott Johnson, Mechanical Systems Section, AIR-623, Technical Policy Branch, Policy and Standards Division, Aircraft Certification Service, Federal Aviation Administration, telephone 202-267-4644; email Scott.R.Johnson@faa.gov. SUPPLEMENTARY INFORMATION: Background On September 21, 2021, Carson applied for an amendment to supplemental type certificate (STC) No. SR02507NY to add a hoist with an OLPD to be installed on Sikorsky Model S-61A, S-61L, and S-61N (including those modified by STC No. SH640NE, which shortens the S-61N by 50 inches) helicopters. The Model S-61 helicopters subject to these special conditions, currently approved under Type Certificate Nos. H2EA and 1H15, are twin-engine rotorcraft. The maximum takeoff weight is between 19,000 and 22,000 pounds, depending on configuration, and the helicopter has a maximum capacity of 39 passengers and a crew of 2. Type Certification Basis Under the provisions of § 21.101, Carson must show that the helicopters for which it makes application to modify by STC No. SR02507NY, as changed, continue to meet the applicable provisions of the regulations listed in each helicopter's respective type certificate or the applicable regulations in effect on the date of application for the change except for earlier amendments as agreed upon by the FAA. If the Administrator finds that the applicable airworthiness regulations ( e.g.,14 CFR part 29) do not contain adequate or appropriate safety standards for the Sikorsky Model S-61A, S-61L, and S-61N (including those modified by STC No. SH640NE) helicopters because of a novel or unusual design feature, special conditions are prescribed under the provisions of § 21.16. Special conditions are initially applicable to the model for which they are issued. Should the applicant apply for a supplemental type certificate to modify any other model included on the same type certificate to incorporate the same novel or unusual design feature, these special conditions would also apply to the other model under § 21.101. In addition to the applicable airworthiness regulations and special conditions, the Sikorsky Model S-61A, S-61L, and S-61N (including those modified by STC No. SH640NE) helicopters must comply with the exhaust-emission requirements of part 34 and the noise-certification requirements of part…

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