Flightaware estimated cruising speeds: way off?

I love the site, but was a bit worried to see a plane my mom was on (a 767-300) going an estimated 527 knots, some 40 knots over the maximum cruising speed. Don’t take this the wrong way; I’m currently in love with the site, and will remain so unitl my aviation obsession subsides. I’d just like to know the various readings of cruising speeds people have gotten.


Note the reported speeds are ground speeds, not air speeds, so they include the effect of winds aloft.

Did your mom marry one of the Google founders?

Not unless they’ve upgraded from their 762. :slight_smile:

Ground speeds? That would explain it; thanks.

And, no-- I’m afraid there’s no Google blood in the family. :smiley:

Got me! :blush: