Tailwind FTW!!
Now you're saying a tailwind is capable of pushing a plane from 500 mph to over 776 mph, with no one on board hearing the sonic boom it created?
notice that sonic boom has to do with the relative speed of an object with respect to the surrounding air.
Sigh. Even is such a tail wind were possible, that would mean a headwind of equal velocity would affect air travel going the opposite direction. This would reek havoc on those flights. I mean flying into winds that could speed a plane up by hundreds of miles per hour would be suicide. I mean if they can speed the plane up by more the 200 mph, they can slow it down by just as much.
http://www.aerospaceweb.org/question/dynamics/q0027.shtml
Fair enough, but then you understand that changes everything we currently know about wind currents. See, because for tailwind to be the explanation of the flight times in the southern hemisphere, you have to make them go not only east to west at a constant speed, but also, west to east. This way planes going in both directions can use them on every trip. See, that's the problem with tailwinds, you can't always catch them. Sometimes, you get hit with a headwind. You also, have to look at the FES map and then explain why these magic tailwinds do not affect any flights in the northern hemisphere. And then you have to explain why the airlines, who have this love of money, aren't using them to make ALL of their flights shorter, thus allowing them to make more flights, and thus more money. See, that's the problem with the whole FET bullshit. There's so much more bullshit you have to come up with just to make the first piece of bullshit work.