Have you ever had a Horizontal Situation Indicator explained to you? The HSI test questions in the FAA IFR Knowledge Exam are some of the toughest you'll see. If you take just a little bit of time to learn how an HSI works, it will make these questions a breeze!

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The HSI combines two instruments, the directional gyro, and VOR receiver. This is great since it reduces the number of things you need to look at in your instrument scan, but since not a lot of us get much practice with an HSI in our training, can steepen the learning curve a bit. But remember that like a VOR, you can still chase the needle to navigate, and you can still use the heading function the same as you would a directional gyro, so it's not too much different.

We'll see in this video that with practice, the HSI can become intuitive and make your instrument flying a lot easier. And yes, we'll have you nailing those tricky test questions too!

Note: The needles on this HSI show up yellowish, but we still refer to these as the "green needles" since they are linked to a VOR signal, as opposed to the pink or magenta needles which would display if the instrument were paired with a GPS signal. Hope this clarifies confusion!

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0:00 What is an HSI?
00:34 Using HSI as a directional gyro
0:56 Using HSI as a VOR
4:00 Test Questions: Position relative to station
6:55 Using HSI on an ILS approach
8:07 Test Questions: Position relative to localizer/backcourse