federal_register: 2017-19943

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document_number title type abstract publication_date pub_year pub_month html_url pdf_url agency_names agency_ids excerpts regulation_id_numbers
2017-19943 Airworthiness Directives; Agusta S.p.A. Helicopters Proposed Rule We propose to adopt a new airworthiness directive (AD) for Agusta S.p.A. Model AB139 and Model AW139 helicopters. This proposed AD would require inspecting the thickness of the tail gearbox (TGB) central housing (housing). This proposed AD is prompted by reports that the housing thickness does not conform to its type design. The actions of this proposed AD are intended to detect and correct an unsafe condition on these products. 2017-09-22 2017 9 https://www.federalregister.gov/documents/2017/09/22/2017-19943/airworthiness-directives-agusta-spa-helicopters https://www.govinfo.gov/content/pkg/FR-2017-09-22/pdf/2017-19943.pdf Transportation Department; Federal Aviation Administration 492,159 We propose to adopt a new airworthiness directive (AD) for Agusta S.p.A. Model AB139 and Model AW139 helicopters. This proposed AD would require inspecting the thickness of the tail gearbox (TGB) central housing (housing). This proposed AD is prompted...  

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