Your exactly right and the use of parallel track will help that. Offset to
the right a
bit.


"Icebound" wrote in message
...
In the "good old" VOR days, it must have been pretty difficult to fly down
the centerline of an airway (or of any direct track).

So an eastbound VFR/IFR aircraft descending from 7500/7000 to his
destination, was more than likely to avoid traffic... on the reciprocal
track passing him by at 6500 or 6000... by some significant horizontal
error-distance, even if they didn't see each other (big sky theory :-) ).

GPS horizontal accuracy with WAAS is already in the order of magnitude of
a Cessna's wingspan, and some are talking about getting it down to mere
inches.

So the question is: If my Westbound Cessna at 6000 feet (with the
autopilot keeping it happily on the GPS-track centerline) meets the
descending Bonanza on the reciprocal track between the same two airports
(using a similar GPS/a-p combo), there is a distinct possibility that the
horizontal clearance may be zero...

...so is there anything in the current crop of GPS and/or Autopilot
systems that allow me to maintain a small cross-track error of my
choosing, without actually entering off-navaid-off-airport waypoints?
...or do we care; am I overly concerned???