Thank you. Okay, I'll buy the MAD analogy, although we were very lucky that MAD worked. No guarantee it's going to work in a multi-party situation. But fine. S

Thank you. Okay, I'll buy the MAD analogy, although we were very lucky that MAD worked. No guarantee it's going to work in a multi-party situation. But fine. Sill, where's the dual technology system? When I got my IFR ticket, I shot an NDB and an ILS plus I had to know about GPS approaches (they weren't certified then). If I couldn't shoot an ILS at an airport, maybe I could pull off an NDB at my alternate. If your GPS broke you could use the NDBs to get a fix, your pitot freezes over you use pitch and power, your vacuum gyro fails you have an electric backup, etc. There was always a mix of methods. The beauty of the system was that you never depended on just one thing. Is that gone now? It's all GPS or nothing? A solar flare takes out our GPS capability, and simply because "there'll be much scarier things to worry about" that means we're not as hosed? Thanks again for the information. Just trying to sort out in my head what risks are being taken.