HAL, Overhaul Division is one of the largest military aircraft production, maintenance, repair and overhaul unit in Asia. It was established at Bangalore in early 1950s for production and overhaul of post-World War II fighter aircraft.
During the 1950s, Hindustan Aircraft Limited (HAL) had developed and produced several types of trainer aircraft, such as the HAL HT-2. However, elements within the firm were eager to expand into the then-new realm of supersonic fighter aircraft. Around the same time, Govt. of India formulated the requirements for a Mach 2-capable combat aircraft for Indian Air Force (IAF). In 1956, HAL formally began design work on the supersonic fighter project and ssubsequently, this division became the pioneer by developing India’s indigenous jet fighter aircraft HF-24 Marut in early 1960s which made its maiden flight in June 1961.