Quote:
Originally posted by Sun Tzu
Have you ever noticed two aircraft flying at relatively the same altitude (or at least what can be distinguished from the ground)
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Well that's kinda the key right there. a 747 at 40,000 feet looks remarkably like a 747 at 35,000 feet from the ground. It's VERY difficult to lock a plane's altitude down with an accuracy of less than 10,000 feet just by looking at it. Meanwhile, that 5,000 feet could see incredibly huge changes in atmospheric conditions.
And like I said before, if the planes are dumping chemicals, where on the plane are they stored?