| 1952,Nov. | Santoku Electronics started the repair of aircraft electronics in Shinagawa (Tokyo) in response to requests from Japan Helicopter Transport Company (currently All-Nippon Airways Co., Ltd) and the aviation department of Yomiuri Shimbun. |
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| 1964,Apr. | Changed company name to Santoku Aviation Co,.Ltd. |
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| 1966,Apr. | Received certification from the Japan Self-Defense Agency to serve the Air Self-Defense Force as a 1st Depot repair station and received certification as 2nd, 3rd and 4th (anti-aircraft artillery) Depot supplier, Ground Self- Defense Force and Maritime Self-Defense Force. |
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| 1974,May | Entered into a contract to operate as Japan-based domestic service stations for LEAR SIEGLER INC. (Power Equipment Division)(now GOODRICH). |
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| 1976,Dec. | Authorized by Ministory of Trransport as a licensed repair station for electrical auxiliaries based on aviation law article 17. |
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| 1978,Jan. | Signed a contract with the DART AEROSPACE (USA) as distributor and service station operator for Japan |
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| 1982,Sep. | Executed a contract with the Furukawa Battery Company as exclusive distributor for the persistent sales of their products . |
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| 1983,Mar. | Signed a contract with the ITW GSE (USA) as a service station for Hobart terrestrial power supply equipment. |
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| 1985,Jan. | Assigned as Certificated repair station for the aircraft balancers and analyzers of CHADWICK-HELMUTH(currently HONEYWELL) (USA) |
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| 1990,Nov. | Entered into a contract with MARATHON POWER TECHNOLOGIES (USA) for the distribution of Marathon-made batteries and the operation of licensed warrantee and repair service center in Japan. |
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| 1991,Apr. | Signed a contract with LUCAS AEROSPACE POWER EQUIPMENT CORPORATION (currently GOODRICH) and SAFRAN(UK) as the warrantee center in Japan for AC GENERATOR, STARTER GENERATOR, and GENERATOR CONTROL UNIT systems. |
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| 1993,Apr. | Entered into a contract with SAFT (France) for the operation of battery repair station in Japan. |
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| 1993,Aug. | Signed a contract with AIR AMBULANCE TECHNOLOGY(Austria) as representative agent for airborne emergency medical equipment in Japan, Taiwan and China. |
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| 1994,Nov. | Entered into an agreement with SAAB (Sweden) for the repair of SAAB aircraft electronic equipment. |
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| 1995,Mar. | Certified as an authorized repair center by the Civil Aviation Administration of China. |
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| 1996,Sep. | Certified as a repair station by the Federal Aviation Administration (FAA) |
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| 1997,Jan. | Signed a contract with AUXILEC (France) for the operation of repair station in Japan and Taiwan for helicopter equipment. |
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| 1998,May | Signed a distributor agreement in Japan with ITW GSE(USA). |
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| 2000,Dec. | Changed to a repair station besed onJapanese aviation law article 20. |
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| 2001,Apr. | Signed a contract with KGS ELECTRONICS (USA) for the sales and maintenance of airborne Inverter and Converter. |
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| 2003,Jun. | Signed a contract with AIRCRAFT PARTS CORPORATION (currently SKURKA) for the sales and maintenance of STARTER GENERATOR and GENERATOR CONTROL UNIT. |
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| 2005,Jan. | Authorized by BOMBARDIER (Canada) as a licensed repair center for electronic equipments of the Q400 model. |
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| 2006,Feb. | Authorized by SAFRAN(UK) as a licensed repair center for AC GENERATOR, STARTER GENERATOR, GENERATOR CONTROL UNIT and other electronic equipments. |
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| 2007,Aug. | By 20 million yen capital increase, the capital became 30,500,000 yen. |
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| 2008,Dec. | It became 100% subsidiary company of Tamagawa Seiki Co,.Ltd. by the stock transfer. |
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| 2009,Oct. | Opened Haneda office in the Haneda airpirt. Placed Kagoshima resdence office in Japan Air Commuter facility in Kirishima city, Kagoshima in October. |
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| 2010,Apr. | Opened Iida facility in Iida city, Nagano. |
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| 2010Oct. | Opened Kagoshima residence office by purchasing a premise in Kirishima city in Kagoshima. |
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| 2011,Apr. | Changed company name from Santoku Aviation Electric.Inc to Tamagawa Aero Systems Co.,Ltd. |
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| 2011,Apr. | Changed from Kagoshima residence office to Kagoshima Satellite. |
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| 2012,Jan. | Moved Tokyo Head Office and Factory to Yokohama city in Kanagawa. |
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| 2013,Nov. | Opened Iida Satellite in Iida City.Nagano. |
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| 2014,Mar. | Certified as a repair station by the European Aviation Safety Agency(EASA) |
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| 2014,Nov. | Moved Yokohama Head Office and Factory to Haneda Airport in Tokyo. |
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| 2015,Apr. | Moved the operations of aircraft repair in part from ANA Component Technics CO.,LTD(Japan). |
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| 2016,May. | Signed a distributor agreement with LANGA INDUSTRIAL(Spain) for Aircraft Hydrauric Jacks. |
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| 2016,Jun. | Signed a contract with FCX(USA) for the sales and maintenance of power supply equipment. |
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| 2017,Feb. | Certified as a official provider by LOCKHEED MARTIN(USA). |
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| 2019,Nov. | Haneda Head office has been Licensed for JISQ9100:2016&JISQ9001:2015(ISO9001:2015). |
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| 2021,Mar. | Signed a contract with ROGERSON-kratos(USA) for the sales and maintenance of Aircraft Avionics. |
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| 2021,May. | Signed a distributer agreement with ROBUS(Canada) for Shelter. |
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| 2021,Jul. | Opened Narita Satellite in Narita airport area, Chiba. |
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| 2022,May. | Narita Satellite has been certified as a repair station on Japanese aviation law article 20. |
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