The Jas-39 story begins with the development of the Saab 39 Gripen, a Swedish multi-role fighter aircraft. The Gripen was designed to replace the aging fleet of Saab 35 Draken and Saab 37 Viggen aircraft used by the Swedish Air Force. Development of the Gripen started in the late 1970s, and the first prototype made its maiden flight in December 1988.

The Gripen was built with the aim of being a cost-effective and versatile fighter aircraft that could operate in various combat roles, including air-to-air combat, air-to-ground attacks, and reconnaissance missions. It incorporated advanced technologies and systems, such as a fly-by-wire flight control system, a digital cockpit, and the ability to operate from short runways.

The Gripen proved to be successful in Sweden, and Saab began promoting the aircraft for export. In the late 1990s, the Czech Republic became the first export customer, ordering 12 Gripen fighters. This was followed by orders from Hungary and South Africa.

Over the years, Saab continued to improve and refine the Gripen design. The result was the Jas-39 Gripen, an upgraded version of the original aircraft. The Jas-39 featured enhanced avionics, improved sensors, increased payload capacity, and better overall performance. It also incorporated various modifications based on feedback from the operational use of the Gripen.

The Jas-39 Gripen gained further international recognition and export success. It was selected by countries like Thailand, Brazil, and Switzerland, among others, as their next-generation fighter aircraft. The Gripen's reputation for affordability, advanced technology, and ease of maintenance played a significant role in its export success.

Saab has continued to develop and upgrade the Jas-39 Gripen. The latest iteration is the Gripen E/F, which features a more powerful engine, increased fuel capacity, and advanced electronic warfare capabilities. The Gripen E/F variant also incorporates a new radar system and other technological advancements to further enhance its combat capabilities.

The Jas-39 Gripen has become an important part of the air forces of several countries, providing them with a modern and capable fighter aircraft. Its versatility, affordability, and advanced technology have made it a popular choice among nations looking to upgrade their air combat capabilities while keeping costs under control. The Gripen's success story continues to evolve as new customers adopt the aircraft, and Saab continues to refine and improve its design.