LOL....... read this....."Already, the DRDO-Hindustan Aeronautics Limited combine that is developing the Tejas Light Combat Aircraft, has asked global aerospace majors for help in developing key systems -- the engine, flight controls and aircraft radar amongst them -- which are delaying the entire LCA programme."
If they want help for engine, flight controls & Radar system...what else is left there to be "Developed"....Pilot seats and tyres??
