federal_register: 2011-30821

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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
2011-30821 Airworthiness Directives; the Boeing Company Airplanes Proposed Rule We propose to adopt a new airworthiness directive (AD) for certain Boeing Company Model 777-200, -200LR, and -300ER series airplanes. This proposed AD was prompted by a report from the manufacturer indicating that the lowered ceiling support structure of Section 41, in airplanes incorporating the overhead space utilization (OSU) option, was found to be under-strength when subjected to a 9.0 g forward load. This proposed AD would require installing new structural members in and new tie rod(s) and attach fittings on the left and right sides of the lowered ceiling support structure. We are proposing this AD to prevent the forward lowered ceiling panels and support structure from becoming dislodged during an occurrence of a 9.0 g forward load and consequent injury to personnel or interference with an emergency evacuation. 2011-11-30 2011 11 https://www.federalregister.gov/documents/2011/11/30/2011-30821/airworthiness-directives-the-boeing-company-airplanes https://www.govinfo.gov/content/pkg/FR-2011-11-30/pdf/2011-30821.pdf Transportation Department; Federal Aviation Administration 492,159 We propose to adopt a new airworthiness directive (AD) for certain Boeing Company Model 777-200, -200LR, and -300ER series airplanes. This proposed AD was prompted by a report from the manufacturer indicating that the lowered ceiling support structure...  

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