Originally Posted by
MStieb
A Pilot Blogger that I follow posted about this recently.
Flight Level 390
It's interesting the trouble an early arrival can cause and that the company can tell them to slow down.
Glad to see another FTer following that blog. It's an awesome one.
Keep in mind that an hour faster in 1 direction doesn't always mean an hour slower in the other. Pilots/dispatchers try to optimize winds by using different altitudes. At 37,000 ft the winds might be X but at 30,000 ft they may be quite different.