The Indian Air Force (IAF) is maintaining a strict stance regarding the potential acquisition of the Russian Su-57E fifth-generation stealth fighter.
Senior officials have indicated that no purchase agreements will move forward unless Indian test pilots are allowed to conduct a thorough flight assessment of the final, series-production version of the aircraft.
This rigorous testing is deemed critical to uncover any hidden technical issues and to determine the exact modifications required to meet India's unique operational demands, especially as the Ministry of Defence carefully weighs the geopolitical and economic implications of major global arms purchases.
While attendees at the Aero India 2025 exhibition witnessed a flying display of the Su-57, the aircraft presented was merely a prototype and not the finalised production model.
Currently, no Indian pilot has had the opportunity to fly the stealth jet, rendering the previous demonstrations inadequate for a comprehensive technical review.
Consequently, the IAF has informed both the Ministry of Defence and Russian aerospace representatives that gaining hands-on access to the latest, fully operational Su-57E is a strict prerequisite before any further evaluations can proceed.
Reports suggest that Russian authorities have so far hesitated to release a series-production variant for prolonged flight trials by Indian personnel.
Moscow is eager to secure a deal, even offering extensive technology transfer and the possibility of manufacturing up to 50 percent of the aircraft locally at Hindustan Aeronautics Limited (HAL) facilities in Nashik.
Despite these lucrative proposals—which reportedly include unprecedented access to the aircraft's source code—the IAF refuses to compromise.
The air force believes that authentic flight data gathered by its own pilots is the only way to expose platform-specific shortcomings and gauge the true difficulty of integrating indigenous systems.
This practical approach by the IAF is rooted in a desire to ensure complete operational readiness.
Top brass note that any vulnerabilities in the fighter's radar-evading capabilities, avionics, weapons systems, or its transitional AL-41F1 engines can only be identified through realistic flight testing.
A firsthand evaluation is also necessary to map out India-specific upgrades, such as outfitting the jet with locally developed sensors like the 'Virupaksha' radar, as well as indigenous communication networks and weaponry. Such customisation is a vital requirement to support the nation's "Make in India" initiatives.
These ongoing deliberations arrive at a critical time, as the IAF urgently seeks to address declining fighter squadron numbers while awaiting the rollout of the domestic Advanced Medium Combat Aircraft (AMCA), which is not expected to enter active service until the mid-2030s.
Russia has presented the Su-57E as a highly capable interim solution, proposing the delivery of up to 40 jets by 2030 alongside long-term joint production agreements.
Nevertheless, the Indian Air Force remains steadfast: there will be no final commitment until a completely independent and exhaustive appraisal of the true, production-ready Su-57E is completed.
