Overview
- The Ministry of Industry and Trade said engine and auxiliary power unit operation remained unaffected during high-speed runs through a purpose-built water pool.
- Tests also covered reverse-thrust regimes used for runway braking, according to Yakovlev test pilot Vadim Shirokikh quoted by Rostec.
- A more than 70‑meter by 12‑meter pool was installed at the LII Gromov airfield in Zhukovsky with water depth set to Russian and European standards.
- The Transport Ministry has cited December 2025 as the target for a type certificate, while Rostec chief Sergey Chemezov expects completion in early 2026, with series production and deliveries planned in 2026.
- Program milestones include the first flight of the fully import‑substituted SJ‑100 on April 23 and the first airframe built with serial technologies flying in September, as UAC released video from the latest water trials.