Sukhoi/HAL FGFA Su-57, the foundation for FGFA's development, among many things the degree of low observability allowed by the design being the biggest of issues. However, Indian officials did not rule out the possibility of relaunching the FGFA project once the Su-57 is fully introduced into the Russian air force, or later acquiring the fully developed platform. On 19 August 2018, it was reported that the FGFA program was not cancelled; the President of the Russian United Aircraft Corporation said that is was just rumours, and that India was still working with Sukhoi on the FGFA program. Although there is no reliable
Sukhoi Su-30MKK Mach 0.9, and this problem was completely solved on Su-30MKK by adopting new measures. According to the Sukhoi Design Bureau, Su-30MKK is the first of the Flanker family to achieve it after Su-35 / 37 (Flanker-E/F) and Sukhoi Su-30MKI. Higher percentage of composite material is used for Su-30MKK in comparison to the original Su-30MK. In addition, new aluminum alloy were used to replace the old type used on Su-30MK for weight reduction. The twin rudders mainly made of carbon fiber composite material were larger on Su-30MKK in comparison to that of the original Su-30MK, but contrary to what was once