Readback—November 2024

IFR Staff

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

Verified

Key Takeaways:

GPS spoofing attacks, though rare, can be detected by jumps in reported time and position, requiring pilots to verify with independent sources like a wristwatch or VOR/DME.
Effective pre-flight planning often involves the difficult but crucial decision to say "No-Go," with the article valuing professional pilot behavior accounts over "stupid pilot" stories.
The piece emphasizes the importance of clear and helpful communication on CTAF (e.g., including N-numbers) and clarifies that mandatory checklist regulations do not universally apply to general aviation, though checklists remain essential.
Complex instrument procedures can feature hybrid navigation options, such as a holding pattern allowing pilots to choose between 4-NM GPS legs or conventional one-minute DME/LOC legs.

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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.