Kev writes:

You'll also need an A/FD (Airport/Facility Directory). Among many
other things, it tells you if there are unusable radials for each VOR.

For example, a VOR near me has the following note:

VOR UNUSBL
029-045 BYD 15 NM BLO 5000 FT;
050-060 BYD 10 NM ALL ALTS;
210-230 BYD 20 NM BLO 6500 FT

Naturally, as a student I blindly planned a flight along one of the
unusable portions. Ooops!

I do have the A/FD (portions of it). But having to look up each and every
VOR? Why can't things be simple? And is every single pilot doing this, I
wonder?

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