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### DEPARTMENT OF TRANSPORTATWN Fcderral Aviation Administration 

### 14CFR Part 39 11.-' - 

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### RTIN2TI20-AA64 Airworthiness D1rectives; SicmaAero Seat 88xx, 89xx, 90xx, 91xx, 92xx, 93xx, 95xx, and 96xx Series Passenger Seat Assemblies, Installed on Various Transport Category Airplanes. AGENC¥: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM)_ SUMMARY: We propose to adopt anew ainvorthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MeAl describes the Wlsafe condition as: Cracks have been found on scats backrest links PIN (part nwnber) 90-000200-104-1 and 90-000200-104-2. These cracks can significantly affect the structural integrity of seat backrests. Failure of the backrest links could result ininjury to an occupant during emergency conditions. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI. DATES: We must receive comments on this proposed AD 

### by [insert date 30 days after date ofpublication in the FEDERAL REGISTER]. ('<)NCURRENCES ROm'''G SYMllO~ ANE-150 

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DATI"[4910-13-P] DEPARTMENT OF TRANSPORT AnON Federal Aviation Administration 14CFR Part 39 (Docket No. FAA-2009-*****; Dlrectorate Identifier 2008·NM-203-ADI RIN 2120-AA64 Airworthiness Directives; Sierna Aero Seat 88xx, 89xx, 90xx, 91xx, 92xx, 93xx, 95x:x, and 96xx:Series Passenger Seat Assemblies, Installed on Various Transport Category Airplanes. AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). SUMMARY: Wepropose to adopt anew airworthiness directive (AD) forthe products lisl.edabove. This proposed AD results from mandatory continuing airworthiness information (MeAl) originated by an aviation authority ofanother country to identify and correct an unsafe condition on an aviation product. The MeAl describes the unsafe condition as: Craeks have been found on seats backrest links PIN"(part number) 90-000200-]04·} and 90-000200-104-2. These cracks can significantly affect the structural integrity ofseatbackrests. Failurc ofthe backrest links could result ininjury to an occupant during cmergency conditions. The proposed AD would require actions that arc intended to addrcss the un5afe condition described inthe MeAl. DATES: We must receive comments on this proposed AD by [insen datc 30 days after date ofoublicarion inthe FEDERAL REGISTER]. 1IDUT1"""><>OJl ANE-1S0 eng 

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