Don's interpretation of the AIM is that since the pilot was almost
certainly cleared to TYS, then that's his clearance limit. The regs say
fly to your clearance limit, and initiate your approach at the ETA.
That means a pilot would fly to VXV (his IAF), fly to the airport (?!),
fly back to VXV, then do full approach.

It seems a tad ridiculous, no?

The way I see it, if you are cleared to the airport (TYS), that
clearance would include the approach needed to get there, or at least to
within the DH or DA. Getting to the airport involves doing the approach
(beforehand). So, if the altitudes were appropriate, I'd start the
approach from the IAF (VXV) without overflying the airport.

In this case, it means arriving at VXV at our 6000 foot altitude, and
turning outbound to make the procedure turn, descending outbound to the
procedure altitude. I see no reason to head for the airport before
heading for the airport.

Jose
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