There are probably dozens of CFD and structural analysis codes in Fortran that are still actively developed and used. Just a few examples:
These are probably all a mixture of both fixed-form F77 codes, and also Fortran 90+ codes. A few more large-scale Fortran codes routinely run at HPC facilities in Germany can be found in one of my earlier posts: High-Q Club at Jülich Research Centre
I’m pretty sure most national weather services rely upon Fortran codes (including for the assimilation of satellite data?). Maybe @milancurcic can name a few.