Magenta Misconceptions: What Most Pilots Don’t Understand About RNAV Glidepath Capture

So where do you get critical information? And do you choose the answer with the most likes?

Max Trescott

Friday, July 25, 2025 at 08:00 AM ET

Verified

Edited By:

Travis Tingle

DOCAL is the IF, and ACHOZ is the fix before the FAF. The hollow white diamond glidepath indicator will turn solid magenta at ACHOZ, the fix before the FAF. [Courtesy: Max Trescott]

Key Takeaways:

The article warns against relying on unverified social media information for critical subjects like medicine and aviation, where misinformation can lead to dangerous outcomes.
It illustrates this through an aviation example of an RNAV approach issue, where online community responses were largely incorrect or offered misleading advice.
The author emphasizes the importance of expert knowledge and empirical investigation by correcting misconceptions and personally verifying technical details, advocating for verifiable sources over popular online opinions.

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Where do you get your information? Do you go to experts, or rely on what people tell you in a Facebook post?

I try not to spend too much time interacting on social media because to me it’s largely a waste of time. It can also be a huge source of wildly speculative, uninformed answers to questions that people pose. Often the correct answer to a question is in the comments, but how does one sort it from the other 95 comments that are incorrect?