Whizz Wheel CRP1
Join Date: Aug 2005
Location: UK
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Something to bear in mind for those who dislike, don't understand the Whizz Wheel or are too lazy to bother and just rely on gps.
Join Date: Jun 2003
Location: EuroGA.org
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retired RAF Air Commodore and president of the Royal Institute of Navigation, said the GPS signal is more fragile than many users might suppose. "Too many people don't understand its foibles and vulnerabilities," he added.
Any single system can fail, so a backup for a GPS is dead reckoning, or (much better) tracking a VOR.
So, what is supposed to be a backup for DR? 121.50? That is another thread....
Better to start with a 99.99% reliable method (GPS), and have a backup plan, than to start with a 90% reliable method (DR) and have no backup plan (which is what a PPL is taught).
