Hey HN! I m an A350 pilot, some of you might remember my flying stats page from last year.Most people assume modern airliners navigate purely by GPS. In reality we still lean on a whole stack of ground-based radio navaids (VOR, DME, NDB, ILS) the oldest of which trace their lineage back to the 1920s.With the amount of GPS jamming around the world at the moment, there are regular stretches of a flight where the jet falls back to these older systems to work out where it is.I first learned all this from a textbook full of static diagrams, and always thought it deserved better. So I built interactive, draggable animations for each one — VOR, ILS, DME, TCAS, SELCAL, phased arrays and more.Happy to answer any questions about the tech or the flying! :)