Hmmm interesting. I thought I remember that 747 could do FL510 (empty of course). I probably read a bad source. Isn't the 747 the highest flying passenger airliner?
I know the Yak-25RV Russian reconaissance jet could do 68,900ft.
What is the highest flyer? Obviously a military jet of some kind...
Edit: Upon further research I found that certain models of the Lockheed U-2R/S can do 90,000ft!!
Last edited by sstaurus; 23rd Nov 2005 at 00:52.