stations. In great circle navigation, your
bearing will change as you move along
the course. This is more evident over
longer distances. To illustrate this,
stretch a string or rubber band over a
globe between Seattle and Tokyo. This
string represents the great circle route.
Note that as you leave Seattle you must
travel northwest and as you approach
Tokyo you must travel southwest.
The effect of these small discrepancies
is generally negligable over the
relatively short distances used for most
flight legs that you will navigate.
What if I manually
activate a leg and it
immediately
sequences to a new
leg?
This will happen if you were on the
FROM side of the leg when you
activated it if you did not press
OBS/HLD first to disable sequencing.
Press OBS/HLD and activate the leg
again. Re-enable sequencing when you
intercept the leg.
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Operations Approach Questions and Answers
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