Transportation Department, Federal Aviation Administration
We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 747-200B, 747-200C, 747-200F, 747-300, 747- 400, 747-400D, 747-400F, 747-8F, and 747-8 series airplanes. This AD was prompted by reports of uncommanded movement of the Captain's and First Officer's seats. This proposed AD would require, for the Captain's and First Officer's seats, repetitive horizontal actuator identifications, repetitive checks of the horizontal movement system (HMS), a detailed inspection of the HMS for certain airplanes, and applicable on-condition actions. This proposed AD would also require an inspection to determine the part number and, if applicable, the serial number of the Captain's and First Officer's seats and applicable on- condition actions. This proposed AD would also provide an optional terminating action for the repetitive checks of the HMS for certain airplanes. We are 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-2019-0188; Product Identifier 2018-NM-174-AD] RIN 2120-AA64 AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747-8F, and 747-8 series airplanes. This AD was prompted by reports of uncommanded movement of the Captain's and First Officer's seats. This proposed AD would require, for the Captain's and First Officer's seats, repetitive horizontal actuator identifications, repetitive checks of the horizontal movement system (HMS), a detailed inspection of the HMS for certain airplanes, and applicable on-condition actions. This proposed AD would also require an inspection to determine the part number and, if applicable, the serial number of the Captain's and First Officer's seats and applicable on-condition actions. This proposed AD would also provide an optional terminating action for the repetitive checks of the HMS for certain airplanes. We are proposing this AD to address the unsafe condition on these products. DATES: We must receive comments on this proposed AD by May 23, 2019. 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 http://www.regulations.gov . Follow the instruc…
Other Federal Register documents from the same docket.
Citation: 84 FR 13840
