Transportation Department, Federal Aviation Administration
The FAA proposes to supersede Airworthiness Directive (AD) 80- 13-10, AD 80-13-12 R1, and AD 2008-03-01, which apply to certain de Havilland (type certificate now held by Viking Air Limited) Model DHC- 6-1, DHC-6-100, DHC-6-200, and DHC-6-300 airplanes. AD 80-13-10 requires repetitively inspecting the main landing gear (MLG) legs for cracks and corrosion. AD 80-13-12 R1 requires repetitively inspecting each engine nacelle lower longeron for cracks and buckling. AD 2008-03- 01 requires incorporating inspections, modifications, and life limits of certain structural components into the aircraft maintenance program. Since the FAA issued those ADs, new and more restrictive airworthiness limitations have been issued for certain structural components. This proposed AD would require incorporating into maintenance records new or revised life limits, modification limits, and inspection or overhaul intervals. The FAA is proposing this AD to address the unsafe condition on these products.
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-2021-0960; Project Identifier 2019-CE-021-AD] RIN 2120-AA64 AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD) 80-13-10, AD 80-13-12 R1, and AD 2008-03-01, which apply to certain de Havilland (type certificate now held by Viking Air Limited) Model DHC-6-1, DHC-6-100, DHC-6-200, and DHC-6-300 airplanes. AD 80-13-10 requires repetitively inspecting the main landing gear (MLG) legs for cracks and corrosion. AD 80-13-12 R1 requires repetitively inspecting each engine nacelle lower longeron for cracks and buckling. AD 2008-03-01 requires incorporating inspections, modifications, and life limits of certain structural components into the aircraft maintenance program. Since the FAA issued those ADs, new and more restrictive airworthiness limitations have been issued for certain structural components. This proposed AD would require incorporating into maintenance records new or revised life limits, modification limits, and inspection or overhaul intervals. The FAA is proposing this AD to address the unsafe condition on these products. DATES: The FAA must receive comments on this proposed AD by December 23, 2021. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45 , by any of the following methods: Federal eRulemaking Portal: Go to https://www.regul…
Other Federal Register documents from the same docket.
Citation: 86 FR 61719
