A rough comparision with the rest of fighter
Years to crash ratio(YTR)
*JFT=1 crash in 5 years (YTR=0.2)
*Gripen=8 crashes in 15 years(YTR=0.5333)
*Rafale=4 crashes in 11 years(YTR=0.363)
*EFT=3 crashes in 9 years(YTR=0.333)
*SU30MKI=3 crashes in 10years(YTR=0.3)
*j-10=3 crashes in 7 years(YTR=0.4285)
add more if anyone want
Need to compare that with fleet size and operational service duration as well.
Gripen, ~250 in operation. 6 crashed. That's 2.4% of the fleet.
Rafale, 100+, 5 crashed. That's 5%. All human errors.
EFT, 350, 2 crashed. That's 0.6%.
J-10, 250+, 3 crashed. That's 1.2%.
MKI, 175, 4 crashed (1 prototype crashed in France, I suppose). That's 2.3%. 200, if we estimate the number of aircraft delivered to IAF and undergoing squadron inductions as of today. So around 2% if we add the numbers delivered. I have not added the 18 Su-30Ks that we had for 12 years and have no crash history. Similarly it would be lower for the 4 other aircraft above as well.
JF-17, 47, 1 crashed. That's 2.1%. Out of which the third squadron is yet to be formed and the rest have been in operation for the least amount of time since induction compared to the other aircraft. All the other aircraft have finished 100000 hours compared to JF-17's roughly 10000 hours. Spanking new aircraft to boot.
Overall Rafale and Gripen are the worst followed by JF-17. Rafales were all human errors while flying in tough conditions. Gripen has been serving since over 2 decades now while JF-17 is very new. So, that would push JF-17 below Gripen. So, which is the worst now?
No comparison, fleet wise or in terms of hours flown.