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Robi77

VOR question

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My VOR instrument ( Cessna 172 ) shows a white horizontal line.On the right side there is a small white/red "box" plus a text "GS".I believe it says GS but nor sure as it is hard to read.Question: what does this white/red box indicate ?ThankHubert Werni

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Hi Hubert,The "horizontal white line" and the "red & white box with GS" will both help you land your aircraft when you find yourself flying in less than ideal VFR conditions. The "red & White box" is actually something called a "flag" and the GS stands for "Glide Slope". When you approach your desired runway and that runway is equipped with an ILS beacon, you can dial the proper frequency of that particular ILS beacon on your NAV 1 radio and receive 2 signals. One will help you stay lined up horizontally with the runway and the second will help you maintain the proper glide slope down to the runway's surface. The second signal activates both the Glide Slope flag and that "horizontal white line". When you are receiving the second signal two things will occur - first, the red and white flag will disappear from the face of your gauge and second, the "horizontal white line - which is actually a movable needle on the face of your VOR 1 gauge - will angle itself either up or down. The object then becomes to bring that needle back into a horizontal position on your VOR 1 gauge thereby indicating that you are on the proper glide slope angle. You can successfully move that needle back to the horizontal position on your gauge by "flying" your aircraft toward that needle, that is gently climb toward an upturned needle or descend toward a downturned needle. By the way, the vertical needle on your VOR 1 gauge will move (deflect) either right or left as it reacts to receiving the first signal from the ILS beacon mentioned above. Your job will be to keep that needle pointed straight up & down thereby indicating you are in the middle of the runway's glide path. Again, "fly" your aircraft gently toward that needle and it will gradually work itself back to the center of your VOR 1 Gauge.Hope this helps.John

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Hi Hubert,The "horizontal white line" and the "red & white box with GS" will both help you land your aircraft when you find yourself flying in less than ideal VFR conditions. The "red & White box" is actually something called a "flag" and the GS stands for "Glide Slope". When you approach your desired runway and that runway is equipped with an ILS beacon, you can dial the proper frequency of that particular ILS beacon on your NAV 1 radio and receive 2 signals. One will help you stay lined up horizontally with the runway and the second will help you maintain the proper glide slope down to the runway's surface. The second signal activates both the Glide Slope flag and that "horizontal white line". When you are receiving the second signal two things will occur - first, the red and white flag will disappear from the face of your gauge and second, the "horizontal white line - which is actually a movable needle on the face of your VOR 1 gauge - will angle itself either up or down. The object then becomes to bring that needle back into a horizontal position on your VOR 1 gauge thereby indicating that you are on the proper glide slope angle. You can successfully move that needle back to the horizontal position on your gauge by "flying" your aircraft toward that needle, that is gently climb toward an upturned needle or descend toward a downturned needle. By the way, the vertical needle on your VOR 1 gauge will move (deflect) either right or left as it reacts to receiving the first signal from the ILS beacon mentioned above. Your job will be to keep that needle pointed straight up & down thereby indicating you are in the middle of the runway's glide path. Again, "fly" your aircraft gently toward that needle and it will gradually work itself back to the center of your VOR 1 Gauge.Hope this helps.John
It definitively did.Yhanks

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