India is offering to buy hundreds of fighter planes from foreign manufacturers - as long as the jets are made in India and with a local partner, air force officials say. 

A deal for 200 single-engine planes produced in India - which the air force says could rise to 300 as it fully phases out aging Soviet-era aircraft - could be worth anything from $13-$15 billion, experts say, potentially one of the country's biggest military aircraft deals, according to The Standard website on Saturday.

After a deal to buy high-end Rafale planes from France's Dassault was scaled back to just 36 jets last month, the Indian Air Force is desperately trying to speed up other acquisitions and arrest a fall in operational strength, now a third less than required to face both China and Pakistan.