Ok - I'm new and all - so what is "15 miles west of HEVVN."

Is that an IFR vector?

It's a location. HEVVN is probably an intersection. I don't have a
database in front of me and am not about to peruse all the charts from
Florida to California, but intersections used in IFR are all supposed to
be five letters and pronouncable. Intersections are used (among other
things) to define IFR routes. They are usually defined by crossing VOR
radials, sometimes by VOR and DME. Nowadays I bet they are putting in
some that exist only in the imaginations of GPS boxes too.

So, wherever HEVVN is, 15 miles west of it is... well, fifteen miles
west of it. Unless you're a country singer, in which case it's West
Virginia.

Jose
--
Get high on gasoline: fly an airplane.
for Email, make the obvious change in the address.