[v0idzer0]

Too coincidental for pilot fatigue/shadows AND instrument malfunction to always happen at the same time in all of these cases. There are hundreds of reported instances in the past few years. This is simply not a serious explanation.

[SonicScrub]

Strongly disagree. The sheer number of flight hours performed by all the world's professional pilots multiplied by the average percentage of a flight that a pilot could be considered to be "fatigued", multiplied by the odds of a cosmetic/minor sensor blip occuring is still an astronomically large number. That confluence of events probably happens quite regularity. This can be acendotealy verified hanging out at any general aviation flight club, and asking pilots about the times they got temporarily confused by some aerial phenomenon that turned out to be a strange reflection off a cloud. Happens literally all the time.

[stevenhuang]

I would encourage you to actually look into the sort of anomalous cases we're talking about here.

https://www.narcap.org/blog/narcaptr20