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#11
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Snowbird wrote:
Why can't you just navigate to the intersection with two VORs? Isn't that taught? There's the concept of "positive course guidance". As far as I know it's not codified anywhere, it's just recognized by some as good practice. I asked the same questions, in this same forum, a long time ago, and I came away from that encounter convinced that positive course guidance is a good thing. I now file flight plans that use only positive course guidance. In other words, the initial fix on my route is a ground based navaid of some kind. If I had a certified GPS, I would have no heartburn about using some random intersection as an initial fix. Dave Remove SHIRT to reply directly. |
#12
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Steven P. McNicoll wrote:
"SFM" wrote in message ... Why is it bad flight planning to use an intersection for your initial fix on your IFR flight? It isn't. As long as you can navigate to it. Matt |
#13
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Snowbird wrote:
David Megginson wrote in message ... I've never heard the issue discussed, myself, but I imagine that the problem would be navigating to the intersection from the airport if you didn't have an IFR GPS and you were not starting out on one of the intersecting airways. Why can't you just navigate to the intersection with two VORs? Isn't that taught? One VOR, I wouldn't care to attempt myself. Would want to be established on an airway. Cheers, Sydney It is pretty hard to fly a straight line using two VORs, unless you are on a line between one of the VORs and the intersection. Matt |
#14
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"Matthew S. Whiting" wrote in message ... As long as you can navigate to it. One should not file what one cannot fly. |
#15
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"SFM" wrote in message ... Why is it bad flight planning to use an intersection for your initial fix on your IFR flight? Who said it was? It's the only way to depart some airports and it's safe. It is also what the DUATS flight plan route generation will give you automagically if a VOR isn't in the right spot. My instrument practical started at a small airport (Angwin, 2O3) without instrument procedures and navigating to POPES as the initial fix of a mythical IFR flight was the first item on the agenda. It's like any fix. You choose to intercept one radial or the other with a reasonable intercept angle, and go from there. You can even just fly a heading towards the fix and try to keep the picture just so, but chances are one of those radials is going to be your course for awhile and it's a bit easier to intercept that one first, even if you have a VFR GPS for situational awareness The standard departure from Grass Valley (O17) used to be a heading to intercept an airway to a fix. Really no different. You don't need to be able to establish an instrument course with positive guidance direct to the fix to know where you are. You've got a compass, a HI, and know what the indicator needles should look like when keeping within the bounds of those two radials. My plan has two NAVs and an IFR GPS. So I have at least 3 ways to identify the intersection granted doing it with one NAV is painful during departure but it could be done. I curious to hear people opinions. I did some IFR training in my PA-28 before I got a second KX-155 installed. It was very difficult for me, I hated spinning the OBS around. Too many numbers to remember . Got easier with a DVOR readout added but didn't finish up the rating until that second radio got installed. Can't imagine passing the practical with one radio, but it's nice to know I could get around with only one, even without a handheld GPS. ATC would probably make life easier after a failure than the DE would without the equipment installed. There is a dual DVOR indicator with a morse ID decoder on the market. If I didn't already have a DVOR on my #2 NAV I'd probably install the indicator. It's very nice if one needs to go direct to a VOR (like on a missed) and be able to read directly the heading to turn towards, and both it and your heading tend to converge to something inbetween. The OBS can be spun directly to the inbound course without overshoot. Very handy. It's also nice to have a digital readout of a radial used for the fix to watch and make a mental check against one's view of reality while the needle remains fully deflected. cheers -Greg PP ASEL IA Scott -- ------------------------------------------------------------------ Scott F. Migaldi, K9PO MI-150972 PP-ASEL Are you a PADI Instructor or DM? Then join the PADI Instructor Yahoo Group at http://groups.yahoo.com/group/PADI-Instructors/join ----------------------------------- Catch the wave! www.hamwave.com **"A long time ago being crazy meant something, nowadays everyone is crazy" -- Charles Manson** ------------------------------------- |
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