I was working at Hughes Canada Systems Division in 1994/1995, and they had an entire division dedicated to developing a next generation Air Traffic Control syst

I was working at Hughes Canada Systems Division in 1994/1995, and they had an entire division dedicated to developing a next generation Air Traffic Control system - it had been mandated about 4-5 years earlier, that this project had to be written using OSI protocol stack. They had been struggling for about 4 years, and still hadn't managed to get the protocol stack on their operating systems interoperating properly. There were dozens of people working on this project too. Total Fiasco. They ended up scrapping most of their work.