2022-10863

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 39 • [Docket No. FAA-2022-0021; Project Identifier AD-2020-01283-A; Amendment 39-22060; AD 2022-11-10] • RIN 2120-AA64 AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. (Piper) Model PA-46-600TP airplanes. This AD was prompted by testing that showed that the wing splice assembly could fail before the assembly reaches its established life limit. This AD requires revising the Airworthiness Limitations section (ALS) of the existing maintenance manual (MM) or instructions for continued airworthiness (ICA) to reduce the life limit of the wing splice assembly. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective June 27, 2022. ADDRESSES: For service information identified in this final rule, contact Piper Aircraft, Inc., 2926 Piper Drive, Vero Beach, FL 32960; phone: (772) 291-2141; website: https://www.piper.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call (817) 222-5110. Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA-2022-0021; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Fred Caplan, Aviation Safety Engineer, Atlanta ACO Branch, FAA, 1701 Columbia Avenue, College Park, GA 30337; phone: (404) 474-5507; email: frederick.n.caplan@faa.gov. SUPPLEMENTARY INFORMATION: Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain serial-numbered Piper Model PA-46-600TP airplanes. The NPRM published in the Federal Register on February 1, 2022 (87 FR 5428). The NPRM was prompted by testing that showed that the wing splice assembly, part number (P/N) 46W57A100-001, could fail before reaching its established life limit on Model PA-46-600TP airplanes. The wing splice assembly was certificated with a life limit of 5,132 hours time-in-service (TIS); however, the failures of the test assembly occurred before reaching that established life limit. The stress levels used in the life limit analysis were not adequate. After a new fatigue test article analysis, Piper reduced the life limit of the wing splice assembly P/N 46W57A100-001 from 5,132 hours TIS to 3,767 hours TIS and revised the Airworthiness Limitations section in the MM accordingly. In the NPRM, the FAA proposed to require revising the Airworthiness Limitations section of the existing MM or ICA to reduce the life limit of the wing splice assembly. Failure of the wing splice assembly, if not addressed, could result in loss of airplane control. The FAA is issuing this …

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