This was the first time I noticed it. And it wasn’t just that one 757, it was all the commercial aircraft as far as I could tell (per LNM). Later in the flight I blew past a Southwest 737 that was showing 211 kts groundspeed. I would believe it based on how fast I passed it (260 kt closure).
Yeah, when I do another flight, I’ll see if the issue repeats.
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