Small Surveillance Aircraft Advance Early Warning and Control (AEW&C) aircraft will be inducted into the Indian Air Force after completion of design and development flight trials and systems evaluation. Defence Research & Development Organisation has fitted into AEW&C various indigenously developed Systems / Equipment. Complete software for all systems have also been developed indigenously, mostly within DRDO. This information was given by Minister of State for Defence Dr. Subhash Bhamre in a written reply to Shri V. Elumalai in Lok Sabha today.