Dallas wrote:
On Fri, 31 Aug 2007 10:40:25 -0400, Dudley Henriques wrote:

You insert a correction for wind anywhere in this chain and you change
from dealing with courses to dealing with headings.
TC-+ (WCA)= TH-+ Var= MH-+ Dev=CH

Ah... very nice. That subtlety did pass by me.

I did however notice that if the term contains "Magnetic" (MH & MC) the
correction for Magnetic Variation has been factored in.

Sometimes pilots flying simple VFR will simply draw a line from A to B
paralleling a VOR radial on the chart as a shortcut. This starts you out
with a MC line instead of a TC line since the VOR is a MC already
corrected for Var. Then if you factor in the wind correction at that
point you get a MH...then the Deviation for a final CH for that leg.
After take off, you adjust the CH on observed winds aloft to maintain track.
This is called the " Good God Almighty, why the hell did they make me do
all those damn wind triangles anyway" method used by many newly
certificated commercial pilots......many on the way home from taking the
flight test :-)))

--
Dudley Henriques