None that I know off. Most of it is C and C++ but there might also be some hardware running Forth still flying around. There is a lot of Fortran in the ground systems, though. Especially in orbital dynamics.
Speaking of which, here’s why I have not touched my Fortran code in years. The obvious benefits of interactive dynamic environments (REPL, plotting, less boilerplate) have all been mentioned. Modern Fortran is still very performant with little effort and IMHO a much better choice for technical computing than C++.
It is also true that Fortran77 is super portable and runs everywhere. In my experience, this was not true at all for Modern Fortran (Fortran2003+) five years ago. I needed to support 4-5 different compilers including Intel Fortran on Windows and some ancient GFortran which was an absolute nightmare. There were even miscompilations and compiler crashes when using “modern” features. In the end, I dumbed down my code to “Fortran95 with benefits”, shipped it to the client to fulfil my contract, and have not touched Fortran since 