2022-18722

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-2022-0183; Special Conditions No. 29-056-SC] AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions. SUMMARY: These special conditions are issued for the Leonardo S.p.a. (Leonardo) Model AW139 helicopter. This helicopter as modified by The Boeing Company (Boeing) will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for helicopters. This design feature incorporates a 2.5-minute all engines operating (AEO) power restricted for use at helicopter operating speeds below 60 knots indicated airspeed (KIAS), and hovering out of ground effect (HOGE). This power is referred to as 2.5-minute HOGE utility power (HUP), or 2.5-minute HUP. The 2.5-minute HUP is greater than the transmission power limitations associated with takeoff and AEO. 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 September 29, 2022. FOR FURTHER INFORMATION CONTACT: Dorina Mihail, Propulsion and Energy Section, AIR-624, Technical Innovation Policy Branch, Policy and Innovation Division, Aircraft Certification Service, Federal Aviation Administration, 1200 District Avenue, Burlington, MA 01803; telephone 781-238-7153; fax 781-238-7199; email Dorina.Mihail@faa.gov. SUPPLEMENTARY INFORMATION: Background On September 18, 2020, Boeing applied for a supplemental type certificate for performance envelope expansion of the Leonardo Model AW139 helicopter. The AW139 helicopter as changed, is a medium twin-engine 14 CFR part 29 transport category B helicopter with a 15,521 pounds (7040 Kg) maximum takeoff weight and a maximum seating capacity of nine passengers and two crew. This helicopter takeoff and landing altitude is 10,000 feet density altitude (Hd), and the forward flight altitude is 11,000 feet Hd. This helicopter has the capability for Category II instrument landing system (ILS) approaches. The Model AW139 helicopter as changed will be equipped with two PT6C-67C1 engines. The Model AW139 helicopter as changed will have a 2.5-minute HUP for use in HOGE that exceeds the transmission power limitations associated with takeoff and AEO. Type Certification Basis Under the provisions of 14 CFR 21.101, Boeing must show that the Leonardo Model AW139 helicopter, as changed, continues to meet the applicable provisions of the regulations listed in Type Certificate No. R00002RD, or the applicable regulations in effect on the date of application for the change, except for earlier amendments as agreed upon by the FAA. The proposed certification basis for this supplemental type certificate is as follows: 14 CFR 21.29 and Part 29, Amendment 29-1 through Amendment 29-45 with 14 CFR 29.25, 29.143, 29.173, 29.175, 29.177 at Amendment 29-51, and 14 CFR 29.773 at Amendment 29-57. Equivalent Level of Safety Findings issued against: 14 CFR 29.1305, as documented in the AB139 FAA Memo, dated December 20, 2004. 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 Leonardo Model AW139 heli…

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