Ukrainian Drone Strike Hits Russian Su-57 Prototypes Rather Than Frontline Fighters - Reports

Following successful Ukrainian strike on Shagol Airfield in Russia’s Chelyabinsk region, which was reported by Ukrainian and Western sources to have destroyed  Su-57 fifth generation fighters and Su-34 strike fighters, multiple Russian and Western analysts have noted that the attack is unlikely to have destroyed any serially produced Su-57s, and appears to have instead destroyed flight prototypes. The destruction of Su-57s would have been particularly significant due to the small numbers that have been, with only around 40 estimated to be in service in Russia, alongside two additional fighters serving in the Algerian Air Force. Flight prototypes, by contrast, are available in significant numbers, and beyond their limited use for marketing and flight testing purposes, they are of relatively limited value since serial production has long since begun. 

A significant indictor that the fifth generation fighters targeted were prototypes is that operational Su-57s have been concentrated both in Western Russia, and in the country’s Far East, with satellite images largely accounting for the full known fleet. Despite Ukraine’s attack being likely to have had no impact on the Russian Su-57 fleet, however, the extreme ranges over which the strike was launched make it highly significant. Chelyabinsk is located in the southern Urals over 1,700 kilometres behind the frontlines, with the range of the attack representing a new threshold for Ukraine’s long-range strike capabilities. There are a number of targets of significantly higher value in the region, which houses key industrial heartlands for both Russia’s defence sector and its civilian industry. 

In August 2025 Deputy Commander-in-Chief of the Russian Aerospace Forces Lieutenant General Alexander Maksimtsev confirmed that preparations were underway to begin deliveries of Su-57 fighters at an accelerated rate. This followed the opening of new facilities that month for production of the aircraft. The expansion of the Su-57 fleet poses a considerable threat to Western Bloc and Ukrainian interests, with the performance limitations of older fighter types such as the Su-30SM and Su-35 having been a major factor in their favour. The fielding of a large Su-57 fleet would allow for a step change in how the Russian Aerospace Forces can wage war. Despite the limited numbers in service, the Su-57 has already been put through more high intensity combat testing than any other fighter type of its generation, with combat operations in the Ukrainian theatre having included air defence suppression, air-to-air combat, and operations in heavily defended enemy airspace, as well as a range of precision strike missions.