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Newbie VOR question



 
 
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  #1  
Old April 4th 05, 07:58 PM
Bruce W.1
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Larry Dighera wrote:

You'd be surprised at how little the distance increases on a VOR route
compared to a direct route.


================================================

You're probably right about the distance. But doesn't everbody flying
TO/FROM VOR stations cause air traffic problems like near misses
(collisions)? Or being aware of this do you just watch the skies very
carefully near VOR stations? Or are there altitude guidelines for each
radial?
  #2  
Old April 4th 05, 08:48 PM
Dan Luke
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"Bruce W.1" wrote:
But doesn't everbody flying
TO/FROM VOR stations cause air traffic problems like near misses
(collisions)? Or being aware of this do you just watch the skies very
carefully near VOR stations? Or are there altitude guidelines for each
radial?


Sort of. There are rules defining what the usable altitudes are based on
magnetic course being flown. Opposite direction traffic should be at least
500' apart, vertically. This offers no protection, though, for aircraft
flying in the same direction or on converging courses that are on the same
side of the compass.

http://www.faa.gov/ATPUBS/AIM/Chap3/aim0301.html#3-1-5 defines VFR cruising
altitudes, which are 1,000' apart. IFR altitudes are 1,000' apart, too, but
are 500' above or below VFR altitudes. Above FL290 the IFR cruising
altitudes are 2,000' apart.
--
Dan
C-172RG at BFM


  #3  
Old April 4th 05, 09:08 PM
Don Tuite
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On Mon, 04 Apr 2005 18:58:38 GMT, "Bruce W.1" wrote:


You're probably right about the distance. But doesn't everbody flying
TO/FROM VOR stations cause air traffic problems like near misses
(collisions)? Or being aware of this do you just watch the skies very
carefully near VOR stations? Or are there altitude guidelines for each
radial?


Traffic may be heavier over VORs, and the closer your heading is to
due North or South (where the hemisphere[1] rule toggles, the more
alert you should be.

That said, I've never actually noticed a particularly heavy increase
in traffic over VORs.

Don
[1] Why hemiSPHERE? Semi-circle I could see, but . . . .

  #4  
Old April 4th 05, 10:46 PM
Larry Dighera
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On Mon, 04 Apr 2005 18:58:38 GMT, "Bruce W.1" wrote in
: :

Larry Dighera wrote:

You'd be surprised at how little the distance increases on a VOR route
compared to a direct route.


=============================================== =

You're probably right about the distance. But doesn't everbody flying
TO/FROM VOR stations cause air traffic problems like near misses
(collisions)?


Congested airways near VORs can be an issue. But the designers of the
VOR airway system had enough insight to separate east and west bound
VFR traffic by 1,000' vertically, and IFR traffic from VFR traffic by
500'. But airways, being only 4 nautical miles wide either side of
centerline can be congested over VORs.

Or being aware of this do you just watch the skies very
carefully near VOR stations?


Yes. That and ATC Radar Advisory Service are the principal methods
used to separate VFR flights on VFR airways.

Or are there altitude guidelines for each radial?


Nope.

Have you spent any time reviewing this:
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgFAR.nsf/CurrentFARPart!OpenView
 




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