Groundspeed Records

[CBreuer]

And now here comes the fastest ground speed so far. Although I had a faster ground speed during the flight from Yerevan to Nagoya the day before with almost 180 knots tailwind, I forgot to take a screen shot

But during the flight from Nagoya to San Francisco I still had some pretty strong tailwinds shortly after departure. At our initial cruising altitude of 31000 feet we had a tailwind component of 155 knots resulting in a ground speed of 655 knots. I think I reached something like 670 the day before. But unfortunately no picture..
But here are the 655 knots