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GPS approach question



 
 
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Old August 29th 08, 03:54 AM
J. Baker J. Baker is offline
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First recorded activity by AviationBanter: Aug 2008
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Quote:
Originally Posted by Matt Whiting View Post


I mistakenly thought that RW28 was the MAP waypoint, but it appears that
this isn't the case. I don't have the GPS handy at home so I can't pull
up the approach again to see what waypoints it lists, but there is no
MAP WP symbol beside RW28. It looks like the MAP is simply the point
2.9 NM from HALOS and isn't a GPS waypoint at all. I'm also thus
assuming that this type of overlay approach can only be flown in OBS
mode with no automatic sequencing. Is this correct?

The Fly Over WP is in the PLANVIEW, (circled WP and it is the RWY THLD). Don't let the chart folks fool you...it may not look that way when you look at the profile, but it's the THLD.


It seems odd that there would be such subtle variations in the symbology
of various GPS approaches. Can anyone explain this briefly or refer me
to a good reference for GPS approaches?

Keep in mind that the evolution of these approaches happened over a very short time and as a consequence lots of things have been changed. Also these approaches may not get rebuilt for over 5 years and you'll see lot's of gradation in charting style...it all doesn't happen overnight.

Matt
 




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