# SAIB NM-11-46: Equipment/Furnishings: Koito Industries Passenger Seats - Type: Special airworthiness information bulletin (advisory, not mandatory) - Status: Historical - Revision: 0 - Issued: August 3, 2011 - Products: Koito Industries Passenger seats, passenger seats and Koito Industries passenger seats - Product type: Appliance - PDF: https://openairdocs.org/files/sha256/ea/6c/ea6cd00d66a2a1e0bba929be185d3c3a5e8531a4369d286461303e366f80bbc6 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/820D38F1CBD311FC862578E10053FF69.0001 - DRS record last changed: August 3, 2011 - Page: https://openairdocs.org/saib/NM-11-46 ## Text FAA Aviation Safety **SPECIAL AIRWORTHINESS** INFORMATION BULLETIN SAIB: NM-11-46 SUBJ: Equipment/Furnishings: Koito Industries Passenger Seats Date: August 3, 2011 This is information only. Recommendations aren’t mandatory. Introduction This Special Airworthiness Information Bulletin advises registered owners, operators, and original equipment manufacturers of transport category airplanes having certain Koito Industries passenger seats of information related to Airworthiness Directive (AD) 2011–12–01. Background Between December 2009 and June 2010, Koito Industries, under the oversight of the Japan Civil Aviation Bureau (JCAB), performed a series of tests (both static and dynamic) on certain Koito Industries passenger seats. The results of these tests have been incorporated into Table 1 and Table 2 of this SAIB. In May 2011 we issued the subject AD for Koito Industries passenger seats to ensure certain static and dynamic strength criteria are met. That AD was issued without related service information from the design approval holder; therefore, owners and operators could find it more difficult to obtain work instructions than it would be using work instructions provided in service information. Because there are numerous airplane models and part numbers for the affected seats, owners and operators may be able to utilize data from seats with more critical design features to obtain and implement appropriate work instructions. The FAA worked closely with the European Aviation Safety Agency (EASA) for harmonization before issuing our AD. In addition, EASA recently issued Safety Information Bulletin 2011-23, which contains related recommendations that are fully acceptable to the FAA. Recommendations The FAA recommends that operators use the data provided in Table 1 of this SAIB as guidance to help reduce the amount of testing necessary for seats installed on Boeing airplanes; the data provided in Table 2 of this SAIB provides guidance to help reduce the amount of testing necessary for seats installed on Airbus airplanes. The concept of “seat clusters” has been developed based on similarity of design and construction. Each row of Table 1 and Table 2 of this SAIB corresponds to a seat cluster that may include one or more Koito Industries seat models. The most critical seat part number for each cluster has been identified. To date, all testing has been conducted on newly manufactured test articles. Although this is acceptable to demonstrate static strength, it is not currently acceptable to demonstrate dynamic strength unless shown that the in-service seats conform to the approved design. Information on available test data has been incorporated into Table 1 and Table 2 of this SAIB. However, any commercial arrangements necessary to obtain such data are the responsibility of the operators. 2 For Further Information Contact Patrick Farina, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM-150L, FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, CA 90712-4137; telephone (562) 627-5344; fax (562) 627-5210.; email patrick.farina@faa.gov. Table 1: The Boeing Company Seat Clusters Seat Model Critica l Seat Part Number for Static Test Critical Seat Part Number for Dynamic Test Koito Dynamic/Static Test Report for Static Strength ARS-339 161-3325-401 Yes ARS-385 ARS-482 179-9828-401 From ARS-385 ARS-392 181-5029-405 Yes ARS-423 ARS-417 ARS-446 161-5319-401 From ARS-423 Yes ARS-478 ARS-418 83-178B6124-401 From ARS-478 ARS-483 83-193B6354-401 ARS-514 83-178B7325-409 (Fwd) 83-178B7325-401(Side) ARS-550 ARS-595 P21B73 83-222B7451-403 From ARS-550 ARS-553 83-223B7336-401 ARS-577 Y11B31 83-220B8711-437 (Fwd) 83-220B8713-401 (Side) From ARS-577 ARS-591 ARS-615 ARS-626 Y11B73 83-220B8306-401 From ARS-591 Yes ARS-592 ARS-616 ARS-814 ARS-859 Y27B73 83-220B8308-402 or -412 From ARS-592 Yes ARS-597 ARS-669 83-237B8545A401 From ARS-597 ARS-600 83-236B8558-401 (or dynamic test on ARS-644) ARS-601 83-237B8628-401 (or dynamic test on ARS-597) ARS-607 83239B10951-403 ARS-620 83-220B9716-401 (or dynamic test on ARS-644) ARS-627 ARS-594 83-227B9988-401 From ARS-627 Yes ARS-629 83-222B10130-401 (or dynamic test on ARS-597) ARS-644 ARS-596 Y11B33 83236B10621A401 From ARS-644 3 Seat Model Critica l Seat Part Number for Static Test Critical Seat Part Number for Dynamic Test Koito Dynamic/Static Test Report for Static Strength ARS-649 ARS-651 83251B10915-415 From ARS-649 ARS-652 83252B11112-401 ARS-668 83258B11456A401 ARS-670 (Subset 1) ARS-709 F1141B7C341-401 From ARS-670 Yes ARS-670 (Subset 2) 83260B11938-401 ARS-670 (Subset 3) 83270B15188-401 ARS-671 83261B11288-401 ARS-673 83220B11989-401 (or dynamic test on ARS-644) ARS-694 - Front Row 83289B17250-401 ARS-694 - Std Row 83289B17246-401 ARS-704 83258B12423-401 (or dynamic test on ARS-668) ARS-710 - Std Row ARS-674 - Std Row ARS-815 Y21B73 83269B15257-403 From ARS-710 - Std Row ARS-813 83252B16199-401 ARS-823 83273B15860-407 ARS-833 PB7-2001 83274B16049-403 From ARS-833 ARS-835 ARS-869 83283B16713-403 From ARS-835 83283B16713-403 From ARS-835 ARS-841 83285B17224-401 ARS-844 83290B17256-401 ARS-849 ARS-857 83296B18681-431 From ARS-849 Yes ARS-858 83296B19960-401 ARS-861 83296B19310-407 ARS-862 83294B19312-409 F11M11 ARS-657 ARS-843 F1141M1K141-401 (Fwd) F1141M1K142-401 (Side) F1161M1K141-401 (Fwd & Side) From F11M11 P11B31 ARS-832 ARS-853 P1143B3N104-401 (Fwd & Side) P1163B3N104-401 (Fwd & Side) From P11B31 Seat Model Critica l Seat Part Number for Static Test Critical Seat Part Number for Dynamic Test Koito Dynamic/Static Test Report for Static Strength P11B33 P1143B3J306-401 Yes P11M93 P1141M9J302-401 P21B35 P21B33 P2141B3A405-401 From P21B35 P32B73 P3241B7J401-401 P52B41 P56B63 P5241B4A401-401 (or dynamic test on P52B41) P5241B4A405-401 From P52B41 Y15B73 ARS-674 ARS-710 - Front Row Y1551B7C341-401 From Y15B73 Yes YE1B35 YE157B3A407-401 YG7B35 YG751B3A401-401 5 6 Table 2: Airbus Industries Seat Clusters Seat Models Critical Seat Part Number for the Static Tests Critical Seat Part Number for the Dynamic Test Koito Dynamic/Static Test Report for Static Strength ARS-451 83-178B5860-403 N/A ARS-507 83-214B6686-401 83-214B6686-401 ARS-511 83-201B6764-401 83-201B6764-401 ARS-514 83-178B7542-413 83-178B7542-413 ARS-516 83-214B7086-401 83-214B7086-401 ARS-571 83-227B7955-401 83-227B7955-401 ARS-604 83222B8743-404 N/A ARS-617 83-240B10457- 407 or 83-240B8856-407 83-240B10457- 407 or 83-240B8856-407 ARS-641 83247B10752-401 83247B10752-401 YES ARS-642 83248B10761-405 83248B10761-405 ARS-646 83250B10730-403 83250B10730-403 ARS-658 P22A23 83255B12061-401 From ARS-658 N/A ARS-659 Y21A23 83256B12051-401 From ARS-659 N/A ARS-667 83257B11418-403 N/A ARS-670 83270B17113-401 83270B17113-401 ARS-672 ARS-643 ARS-643R ARS-694 ARS-707 ARS-837 ARS-647 ARS-838 83262B12136-401 From ARS-672 83262B12136-401 From ARS-672 ARS-697 83267B15043-404 N/A ARS-832 83274B16017-401 N/A ARS-836 83279B16586-411 83279B16586-411 ARS-840 83284B17131-401 83284B17131-401 F44A33 F4439A3S014-401 F4439A3S014-401 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.