In a previous article, said:
A similar useful rule would be that an around-the-world flight has to
be made between points located between 50 south and 50 north.

There was such a rule applied to Fossett's flight, that it had to stay
within certain latitudes and the total length had to be at least as long
as such-and-such.


--
Paul Tomblin http://xcski.com/blogs/pt/
"I spend 2/3's of every conference call trying to keep him from opening
his mouth and letting stupid pour out of it." - Joe Hetrick