The Hindustan Aeronautics Tejas light combat aircraft (LCA),is being primed for its first supersonic flight this week.
Dr V K Aatre, scientific adviser to the Indian defence minister, says the flight will begin the next stage of envelope expansion.
The two technology demonstrator LCAs have completed more than 80 sorties since the first flight of TD1 in early 2001.
The government has given the go-ahead for the initial production of eight Tejas.
Source: Flight International