The Day The Waypoints Died

Imagine you’re cruising high above an undercast, in smooth, clear skies. The GPS in your panel shows you making good time, with about an hour remaining to your destination. The Center frequency has been fairly quiet; you know there are a lot of other IFR airplanes out there, but everyone is settled into cruise so all you hear are the handoffs to the next sector or approach facility, or the occasional clearance for an approach into a rural airport. Then, without warning, your GPS advises it’s lost a usable signal. The magenta line by which you’ve been navigating direct to your destination airport disappears and you have no more groundspeed or position information. Everything else seems normal—it’s not an electrical failure, at least not to the airplane’s entire system—but you no longer have GPS navigation.

Key Takeaways:

• Modern aviation's heavy reliance on GPS makes a system-wide outage a critical "single-point failure" risk, potentially causing widespread chaos and disrupting IFR navigation.
• Many current IFR pilots may have diminished proficiency in traditional VOR navigation, which would become the primary backup method if GPS were to fail.
• The article emphasizes the importance of remembering and practicing VOR navigation skills, including theory, practical usage, station identification, and non-precision VOR approaches, as a vital risk-management strategy.

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