"why there aren't many VOR's in high latitudes
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Ok, I'll bite...why not?"
Hmmm.... Perhaps I've misunderstood something I was taught (a long time ago).... I thought you couldn't use VOR when an aircraft Heading Reference system was operating in "True". Considering most modern glass jets have IRS's and that the Hdg Ref systems switch to True automatically, I thought you wouldn't be able to use VOR above a certain latitude(?). For example, doesn't a flag drop into view on a 747-400's RMI when above a certain latitude (or when True is selected)?
Thanks.
Rgds.
Q.
P.S. Or is there less VOR coverage in high latitudes because polar bears keep chewing on the VOR groundstation repairmen?
