BobsV35B(at)aol.com
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 Posted: Fri Feb 02, 2007 4:13 pm Post subject: FAA MAY TAKE AWAY PANEL-MOUNT OPTION FOR PORTABL... |
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Good Evening Dave,
I am in your camp on this one, but I do want to point out that there is a way to use a "VFR only" GPS during IFR navigation legally.
It is not a "cheater" use at all.
The idea is that you request a direct routing from the controller.
He/she has the authority to issue such a clearance, but there is no way specified as to how you are going to stay on course. You could use Deductive Reasoning if that were your desire. As long as you stay on course, you are legal and so is the controller. Since you are operating on his/her authority rather than your own, no cheating is taking place.
In general, a controller will not issue such a clearance unless you are going to be in a radar coverage area.
If your use of ded reckoning results in a deviation from course, he or she will tell you about it. You may stay on course by looking at a mountain range, following a river or noting displacement via VOR or DME, you can make corrections on the ded reckoning course as better information becomes available to you. If you use a VFR GPS to stay on course, you should also be able to make appropriate checks of the VOR and DME positions to verify the adequacy of the navigation method chosen.
We as pilots are NOT authorized to navigate by using a VFR GPS, but we can use it as an aid to situational awareness as long as we stay within the navigational airspace for which the controller has issued us a clearance.
IFR navigation is a cooperative venture. It is up to both we aviators and the controller to be sure that whatever we do is legal as well as an efficient use of the airspace.
Using a handheld to execute a GPS approach is illegal and ill advised. Using it to provide situational awareness as a back up to navigation via Deductive Reasoning is not.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
In a message dated 2/2/2007 5:01:06 P.M. Central Standard Time, N6030X(at)DaveMorris.com writes:
| Quote: | Enroute, on the other hand, if you file direct you can fly it any way
you want to, including pilotage, and who's to know whether you used
your Nav radios or your dangerously unapproved GPS. Throw in a VOR
in each ARTCC sector for good measure, and I think there's no way to know.
Dave Morris
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