New Delhi, Sep 18 (UNI) Hindustan Aeronautics Limited (HAL) on Friday handed over two LCA Tejas Final Operational Clearance (FOC) twin-seat trainer aircraft and three HTT-40 basic trainer aircraft to the Indian Air Force, besides four Dhruv Next Generation (NG) helicopters to Pawan Hans Limited, in a major boost to India’s indigenous military and civil aerospace programmes. .