HAL Tejas Light Combat Aircraft

The HAL Tejas is the product of India's Light Combat Aircraft (LCA) programme, sanctioned by the Government of India in 1983 to replace the ageing fleet of Soviet-origin MiG-21 interceptors and to build a sovereign combat-aircraft design and manufacturing base. The programme was placed under the Aeronautical Development Agency (ADA), an entity created in 1984 under the Department of Defence Research and Development, with Hindustan Aeronautics Limited (HAL) as the principal manufacturer and the Defence Research and Development Organisation (DRDO) coordinating the wider technology effort. The aircraft was formally named "Tejas" — Sanskrit for "radiance" — by Prime Minister Atal Bihari Vajpayee in 2003. The design objective was a lightweight, tailless compound-delta-wing fighter built around composite materials, relaxed static stability, and a quadruplex fly-by-wire flight control system, technologies India had not previously mastered in a combat platform.

The procedural and developmental path of the Tejas illustrates the staged certification model used for indigenous military aircraft. The Technology Demonstrator TD-1 first flew on 4 January 2001, piloted by Wing Commander Rajiv Kothiyal. The programme then moved through prototype vehicles and limited series production aircraft, accumulating flight envelope expansion before achieving Initial Operational Clearance (IOC) on 20 December 2013 and Final Operational Clearance (FOC) on 20 February 2019. Each clearance is granted by the Centre for Military Airworthiness and Certification (CEMILAC) and authorises the aircraft for progressively wider operational roles, weapons release, and flight conditions. The Indian Air Force formally inducted the first Tejas squadron, No. 45 Squadron "Flying Daggers," on 1 July 2016 at Bengaluru, later relocating it to Sulur, Tamil Nadu.

The Tejas is powered by the General Electric F404-GE-IN20 turbofan, a foreign-sourced component that reflects the failure of the indigenous Kaveri engine to reach the required thrust and timeline. It carries a multi-mode radar, an electronic warfare suite, and a glass cockpit, and is cleared to deploy beyond-visual-range air-to-air missiles, precision-guided munitions, and air-to-ground weapons across nine hardpoints. Variants include the Tejas Mk-1, the upgraded Tejas Mk-1A with an active electronically scanned array (AESA) radar, improved electronic warfare systems, and unified maintenance enhancements, and a twin-seat trainer. A naval variant for carrier operations was tested, including an arrested landing aboard INS Vikramaditya in 2020, though the IAF land-based versions remain the production mainstay. The larger Tejas Mk-2, a medium-weight fighter with the more powerful GE F414 engine, is a separate development effort.

Concrete procurement milestones anchor the programme's contemporary status. In February 2021 the Ministry of Defence signed a contract with HAL valued at approximately ₹48,000 crore for 83 Tejas Mk-1A aircraft, comprising 73 fighters and 10 trainers — the largest indigenous defence procurement order at that time. In 2023 the Defence Acquisition Council accorded approval in principle for an additional 97 Mk-1A aircraft. HAL operates production lines in Bengaluru and a third line at Nashik to raise output. Deliveries of the Mk-1A have faced schedule slippage tied to GE F404 engine supply delays from the United States, a recurring point of parliamentary and press scrutiny in 2024.

The Tejas must be distinguished from adjacent categories with which it is frequently conflated. It is a light combat aircraft, not a medium multirole fighter such as the Rafale procured under the 2016 inter-governmental agreement with France, nor a heavy air-superiority platform like the Su-30MKI. It is also distinct from the fifth-generation Advanced Medium Combat Aircraft (AMCA), a stealth programme cleared for prototype development in 2024 and intended for a later induction horizon. Unlike a fully indigenous platform, the Tejas relies on the imported F404 engine and select avionics, which places it in the category of "indigenously designed, developed and manufactured" (IDDM) rather than wholly import-free — a regulatory classification that matters for content-percentage and offset accounting under defence procurement rules.

Controversy and edge cases have shadowed the programme throughout its life. The roughly three-decade gap between sanction in 1983 and first squadron induction in 2016 made the Tejas a standing reference point in debates over India's defence research timelines and the costs of self-reliance. Critics cite the abandoned Kaveri engine, indigenous-content figures that include imported subsystems, and per-unit costs against the original lightweight-interceptor concept. Supporters counter that the programme created an enduring composites, fly-by-wire, and systems-integration ecosystem now feeding the Mk-2 and AMCA. The Tejas has also become an export instrument, with HAL marketing it to Malaysia, Egypt, Argentina, and others, positioning the aircraft within India's broader defence-export ambitions.

For the working practitioner — the UPSC aspirant, defence-desk officer, or policy analyst — the Tejas is the canonical case study for the General Studies Paper III themes of indigenisation, "Atmanirbhar Bharat" in defence, and the structural challenges of sovereign technology development. It illustrates the institutional roles of ADA, DRDO, HAL, and CEMILAC; the IOC-FOC certification sequence; the persistent dependency on foreign propulsion despite design sovereignty; and the linkage between domestic manufacturing capacity and squadron-strength shortfalls in the IAF. Understanding the Tejas equips the analyst to interrogate defence-procurement timelines, engine-supply geopolitics, and the trade-offs between import substitution and operational readiness that define Indian military modernisation.