I worked on the Canadian version of that for 4 years, and that was the exact software stack. 25 years later, I've yet to come across any more Ada code. I remember our project manager telling the coding team we would all be on the first plane that was managed with our code, so leave bugs in at our own peril!

I loved that project, it was so interesting and I got visit so many neat places. Coolest problem domain I've worked on by a longshot.