Here the silly Indian claims of shooting down F-16 goes in smoke.
https://www.bellingcat.com/news/rest-of-world/2019/03/02/falcon-vs-bison-verifying-a-mig-21-wreck/
The imagery appears to show an exhaust consistent with an R-25 engine found on the MiG-21bis. Additional imagery from the scene helps us verify this is the tail section.
If we rotate the image 180 degrees and put it side-by-side with a MiG-21’s tail, we have a good match.
For completeness, we can also match the section with the box which was claimed to contain an F-16 serial to this same piece.
According to a MiG-21 service manual available through CIA’s archive, we can determine that this is the thermocouple service hatch. Another manual for the aircraft states that the thermocouple junction box is located in this part of the aircraft, so it’s possible that is the function of the numbered box.
n fact, if we take a closer look at the service hatch, we can see a “CU” format serial number on there, which is used on the upgrade Indian MiG-21bis aircraft.
So, taken together, this is all so say that the claim about the writing on the junction box proving this is be an F-16 part is not correct. This is in fact very much part of an Indian MiG-21.
Here, YouTube gives us another interesting point of comparison. Reportedly, a MiG-21bis was shot down in Croatia in 1991, and the wreckage of the aircraft is on display at the “museum collection of the homeland war in Turanj“. The YouTube walkaround of this wreckage shows features which match better to a MiG-21 than an F-16.
In summary, there’s no compelling evidence offered as of yet that an F-16 would have been shot down, and all signs point to MiG-21 wreckage having been on display thus far.