Why in news?
The Ministry of Defence identified an Indian firm to build a maintenance, repair and overhaul (MRO) facility for the S‑400 ‘Sudarshan Chakra’ air defence system in July 2025. This move aims to support the long‑range missile system procured from Russia.
About the S‑400
- The S‑400 Triumf (NATO designation: SA‑21 Growler) is a Russian long‑range surface‑to‑air missile system capable of engaging aircraft, ballistic missiles, cruise missiles and unmanned aerial vehicles.
- India signed a contract in 2018 to acquire five squadrons worth about ₹35,000 crore. Three squadrons have been delivered; the remaining two are expected by 2027.
Key features
- Range and tracking: Detects aerial threats up to 600 km away and can engage multiple targets at ranges up to 400 km.
- Multi‑target capability: Simultaneously tracks and engages up to 80 aircraft or missiles, including stealth platforms and hypersonic weapons.
- Rapid response: Transitions from detection to launch within seconds and uses active and semi‑active radar seekers for guidance.
- Integrated system: Each squadron comprises command vehicles, long‑range surveillance radar, engagement radar and multiple launcher trucks.
Significance for India
- Provides robust air defence coverage along the western and northern borders, protecting cities, military bases and critical infrastructure.
- The planned MRO facility will ensure quicker servicing, reduce dependence on foreign maintenance and build domestic expertise in complex air defence systems.
- The system has already been deployed in strategic locations like Pathankot and the Siliguri Corridor and has proved its capability in recent exercises.