About us
Founded in 2017, STAVAC LLC / G.K. is a private consulting firm providing various value-added services and solutions in the field of...
- Organization Approval (EASA, FAA, JCAB)
- Management System (Quality, Compliance, Safety)
- Operational Audit (System, Process, Product, Safety, Subcontractor, Supplier)
- Total Quality Management (TQM, BPR, BPM)
Primarily focusing on...
- Aviation / Aerospace
- Propulsion System / Energy (Power Generation)
- Advanced Air Mobility (AAM) / eVTOL industries
as well as Component, Industrial Material, and Industrial Machinery.
We are proud to serve clients for the sustainable business growth toward upcoming dynamic change and transformation.
Corporate Summary
Who we are
Company name
STAVAC LLC / G.K.
STAVAC stands for State-of-the-art Engineering, Value-added Consulting.
We set a business policy that “play a role in industrial development, by establishing, improving, and optimizing corporate and operational challenges.
We strive to provide highly value-added services and solutions.
Established in
April 17th, 2017
Since establishment, we have primarily focused on business in the aviation industry which strictly require high level quality.
As of April 2024, it has been 7 years since establishment. From now on, we are going to expand into different industries, in parallel with business in the aviation industry.
We are excited to serve clients under different environment (language, culture, practice), both domestically and overseas.
Located at
4th Floor, YBP
Nihon Ohdouri 7, Naka-ward,
YOKOHAMA 2310021 JAPAN
Through arrival of the black ships by Commodore Perry, and end of the national isolation by opening a port, Yokohama has been a town where is much western culture entered in the era of modern Japan, during the process of development into a trading port.
The office is located in the area where is lined with classical and modern buildings, surrounded by a number of cultural heritage sites such as railways and foreign mail, regionally originated in Yokohama.
It is closely located in a favorable environment, with government offices, financial institutions, port facilities, and the Chinatown nearby. In addition, you can hear the whistles of passenger ships at the Ohsanbashi (pier), echoing throughout the Port of Yokohama, making you feel close to the Minato (port), where is good old town of Yokohama.
Head
HIROYUKI OHKAWA
Managing Director
Field ; Material, Propulsion System
In 1995, he started careers, product development and business development related to precision parts and raw materials (forging, casting) applied to jet engines.
Then, he engaged in the design and development of aircraft structures of aircraft operated by the Ministry of Defense, at R&D company that develops aircraft structure and component made of CFRP - Carbon Fiber Reinforced Plastic.
After engaging in quality assurance team of an automotive manufacturer (OEM), he returned to the aviation industry again.
Finally, he joined In a project of new airline start-up, and engaged in the Maintenance Planning responsible for overall maintenance operation scheme under the Aviation Law Article 20, toward the Air Operator Certificate (AOC) and Maintenance Organization Approval (MOA).
Main Clients
Direct deals only
〒231-0021
横浜市中区日本大通7
横浜日本大通7ビル 4階 YBP
4th Floor, YBP
Nihon Ohdouri 7, Naka-ward,
YOKOHAMA 2310021 JAPAN
STAVAC 合同会社
STAVAC LLC / G.K.
日本大通り駅より
徒歩にて 3分（3番出口から）
・横浜高速鉄道 みなとみらい線
東急東横線と相互直通運転
桜木町駅より
横浜市営バスにて 10分
降車：日本大通り駅県庁前
・JR京浜東北線
・横浜市営地下鉄 ブルーライン線
