The indigenous Tejas fighter, first approved way back in 1983, has missed yet another deadline to become fully combat-ready. The govt had repeatedly declared that the jet would gets its final operational clearance (FOC) by June 2018. But the single-engine Tejas is still far away from achieving the FOC. The estimated overall development and production cost of the first 123 lightweight Tejas has also zoomed past Rs 75,000 crore.