According to the sources, the plane took off around 9:30 am and went missing near Doulasang area of Arunachal Pradesh, which is a border area adjoining China. The last contact was made around 11:30 am when the aircraft was nearly 60 km north of Tezpur in Assam.
Tezpur Air force station is located 172 km from the China border.
The aircraft is overdue and actions have been initiated, IAF sources have said.
In March this year, a Sukhoi-30 aircraft had crashed near an air base in Rajasthan’s Barmer. Both pilots had ejected to safety. This was the third crash of Sukhoi – a frontal aircraft of the Air Force – in Rajasthan.