Readback—November 2024

IFR Staff

Thursday, November 07, 2024 at 08:00 AM ET

Verified

Key Takeaways:

GPS spoofing, though rare, can be detected by sudden jumps in reported time and position, requiring verification with independent sources like a wristwatch or VOR/DME.
Professional pre-flight planning often includes making difficult but necessary "No-Go" decisions, and clear communication, such as using N numbers in non-towered airspace, enhances safety.
While specific regulations (e.g., FAR §91.503 for checklists) may not apply to all general aviation pilots, the common-sense practice of having checklists readily accessible is still paramount.
Complex instrument approaches can offer flexible navigation options, allowing pilots to choose between GPS-based (e.g., 4-NM legs) or conventional (e.g., 1-minute DME/LOC legs) methods for holds.

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Spoofing Confusion

I enjoyed your “GPS Jamming, Spoofing” article in June 2024. Would you please expand on your comment that “GPS satellite spoofing attacks are often detected by a jump in the time reported from the GPS.”?

Where would I check to see if there was a “jump in the GPS time”? Does that mean that the time shown on the GPS status page won’t match the current time? We currently have a WAAS-enabled Garmin GNS 530 but are planning to upgrade the entire panel in six months.