Assuming that numbers of combat aircraft in IAF are going to be around 750 in number in the future ( up from about 650 today ) , where is space for LCA Tejas ? Let us check the numbers of combat aircraft in 2030 based on future plans . By 2030 the Sukhoi 30 MKI will be already in full numbers ( 272 ) in IAF . But having being started to be inducted in the late nineties , even the earliest Sukhois will not be yet ripe for retirement . Here I am assuming that their service life is about 40 years . Plus there will be MRCAs . The contract of 126 aircraft may have been increased by to about 200 . And by this time hopefully the FGFA will have been inducted in full numbers---about 250 . If we add the numbers 272 ( Sukhois ) + 200 ( MRCAs ) + 250 ( FGFAs ) = 722 . Even if we assume that some aircraft will be lost to accidents , there will be about 700 combat aircraft . So there is space for only 50 more Tejas aircraft . So where will the planned 200 Tejas fit in ?? Unless of course we do not buy more than the initial 126 MRCAs . The Sukhois are already contracted for numbering 272 , that number is fixed . FGFA is not contracted yet , but there is no sense in funding the development of a new aircraft unless we buy it in large numbers . Its number is going to be 250 to 300 , but here I am quoting minimum number ( 250 ) . So , unless we buy only 126 MRCAs , there is hardly any space for Tejas . Or else , we are thinking of expanding our combat aircraft fleet . Here of course , I am assuming the Tejas development gets completed as planned . But there seems to be no space for it . Can somebody explain the arithmetic to fit Tejas in the air force ??