ADF and GPS equip %

The way GPS has been handled in the UK is completely stupid, and it's
too late to do anything about it. A whole generation of pilots has
come out of the system sincerely believing its use is (various forms
of) illegal.

Would you feel the same in reverse? Suppose Croatia had developed some
nifty technology which provided worldwide navigation coverage by (say)
sending a neutrino beam into the upper atmosphere and measuring the
backscattering with a five pound piece of electronics and a square foot
of tin foil. (real tin, not aluminum). Would the FAA approve that for
IFR flight in the US, relying on Croatia's neutrino beam?

Jose
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