The Qualification Approval for Design Organization (TOYO) and The Qualification Approval for Production Organization (UrOYO) procedures have been started as a first within the scope of the ERCIYES Project carried out for the avionic modernization of C-130E and C-130B type aircrafts.

Assigned by the Undersecretariat for Defense Industries (SSM) to establish the infrastructure for Airworthiness Certification, STM prepared the “Regulation on Ensuring Airworthiness in Aircrafts”, taking as a basis a system-based approach that is in parallel with civil aviation regulations and processes, in order to create an internationally acceptable infrastructure.

The current applications in the world have been reviewed when taking as a basis the above-mentioned system-based approach. At first glance, it is known that Governments are responsible for taking necessary measures to prevent deaths, injuries and other losses that may be caused by accidents, in accordance with national and international regulations; the aviation sector, in this aspect, is the foremost of sectors in which the safety factor is the most crucial. Military and civil aviation authorities are responsible for producing the necessary legal arrangements within the scope of ensuring aviation safety and supervising compliance to these arrangements on behalf of each State. Aviation regulations are constantly updated in line with the experiences gained in aviation and the growth of the sector. In particular, the inadequate increase in the number of authority personnel despite the growth experienced in the aviation industry has led the way to authorities adopting various approaches in supervising compliance with regulations.

Today, in ensuring aviation safety, the former product-based approach has been replaced with a system-based approach. In product-based approach, safety is ensured by one-to-one inspection of each product by the authority, whereas in system-based approach this responsibility is shared with the aviation sector through concessions. In system based approach, the main prerequisite is that the contractor’s infrastructure built for product realization is acceptable by the relevant authority within the scope of applicable regulations; and in this scope, agencies and organizations are held subject to authority evaluations at Project start-up and during advanced Project stages.

Within the scope of the system-based regulation put into practice by SSM, agencies and organizations wishing to produce in compliance with type design and acquire the Type Design/ Complementary Type Design Approval Certificate are required to establish their design and production organizations and obtain Project-based TOYO and UrOYO certifications.

TOYO and UrOYO working groups composed of STM experts serving on behalf of SSM for the ERCIYES Project carried out by TUSAŞ have been carrying out evaluations since April 2007 in five-phases. To date, the TUSAŞ design organization has been evaluated for a period of 2 weeks under 12 (twelve) main category headings. It is envisaged that the evaluation of the production organization will take one week and include 15 (fifteen) main category headings. Following the conclusion of design and production evaluations, the TOYO and UrOYO certificates will be published by SSM.

Said Airworthiness certification infrastructure and processes built by STM and implemented by SSM were created in accordance with the processes and infrastructure of the European Aviation Safety Agency (EASA). Hence, in order to get their TOYO and UrOYO certificates, agencies and organizations are required to fulfil EASA IR Part 21 Subpart J  and EASA IR Part 21 Subpart G in addition to the military standards sought.

Continuing the infrastructural works to integrate TOYO and ÜrOYO processes withSSM’s processes, STM keeps on producing cost-effective solutions oriented to establishing and commissioning Project infrastructures for organization approvals of agencies and organizations planning to engage in design and production activities in military or civil aviation.