had performed well in the 1971 combat, and had enjoyed superior safety records to other IAF aircraft such as the Gnat. Some aircraft had less than 100 recorded flight hours when the retirement of the Marut was being mooted. Variants HAL X-241A full scale research glider replicating the proposed production aircraft, with identical dimensions, control configuration and aerofoil sections. Marut Mk.1 Single-seat ground-attack fighter. Marut Mk.1A The third pre-production aircraft fitted with an afterburning Bristol Siddeley Orpheus 703 with 18% boost at thrust. Marut Mk.1 BXA single Mk.1 converted as a flying test-bed for the Brandner E-300 turbojet engine. Marut Mk.1T Two-seat training version. Marut Mk.1R Two HF-24s fitted with two afterburning Bristol Siddeley Orpheus 703s with 18% boost at thrust. Marut Mk.2A projected Rolls-Royce Turbomeca Adour powered derivative. Former operators Indian Air Force No. 10 Squadron IAF No. 31 Squadron IAF No. 220 Squadron IAF – last unit with the type, relinquished aircraft mid-1990 Surviving aircraft There are several surviving Maruts open to public inspection: Visvesvaraya Industrial and Technological Museum, Bangalore. HAL Museum, Bangalore Kamla Nehru Park, Pune. Nehru Science Centre, Mumbai. Periyar Science and Technology Centre, Chennai ASTE (Aircraft & Systems Testing Establishment), Bangalore Air Force Academy, Dundigul Deutsches Museum Flugwerft Schleissheim now on display at Museum für Luftfahrt und Technik Wernigerode Indian Air Force Museum, Palam Specifications (Marut Mk.1) See also References Citations Bibliography Arnett, Eric H. Military Capacity and the Risk of War: China, India, Pakistan, and Iran. Oxford University Press, 1997. . "Maruta: India's Hindustan HF-24 Joins the IAF". Flight International, 2 July 1964, Vol. 86, No. 2886. pp. 16–17. Donald, David (editor). The Encyclopedia of World Aircraft. London:Aerospace, 1997. . Gupta, Amit. Building an Arsenal: The Evolution of Regional Power Force Structures. Greenwood Publishing Group, 1997. . Kumar, Satish. India's National Security: Annual Review 2013. Routledge, 2015. . Nordeen, Lon O. Air warfare in the missile age. Smithsonian Institution Press, 2002. . Rajagopalan, Swarna. Security and South Asia: Ideas, Institutions and Initiatives. Routledge, 2014. . Smith, Chris. India's Ad Hoc Arsenal: Direction Or Drift in Defence Policy? Oxford University Press, 1994. . Taylor, John W. R. Jane's All The World's Aircraft 1969–70. London:Jane's Yearbooks, 1969. Taylor, John W.R. (editor). Jane's All The World's Aircraft 1976–77. London:Jane's Yearbooks, 1976, . Thomas, Raju G.C. Indian Security Policy. Princeton University Press, 2014. . External links FAS page on HAL HF-24 Marut Marut 1960s Indian fighter aircraft Twinjets