Fly to the VOR.
You're flying heading 145 with this VOR indication. If you want to turn the airplane toward the station, with a TO indication and the needle centered, what would be the correct bearing to the station?
Pick an answer. You can try as many as you like.
Read the full explanation
C. 315
What the VOR is telling you
The OBS is set to 145 with a FROM indication, and the needle is deflected to the right, on the last dot. On a VOR each dot is 2 degrees, five dots to full scale, so you're 10 degrees off the 145 radial.
Which side of the radial
Flying heading 145 with a FROM, the 145 radial is off your right side. That puts you on a smaller number, the 135 radial. You're southeast of the station and it's behind you.
Flip it to TO
The course to the station is the radial you're on plus 180. 135 plus 180 is 315. Set 315 and the needle centers with a TO indication.
The trap
325 is the reciprocal of what's set, and it would be right if the needle were centered. Turn the OBS to 325 and the flag switches to TO, but the right deflection becomes a left deflection. You're still 10 degrees off. 335 applies the deflection in the wrong direction; it's the answer from the 155 radial.
Heading doesn't matter
The VOR doesn't know your heading. The indication shows where you are in relation to the station. Heading only makes it easier to see which side of the radial you're on.
About the GS flag
There's no glideslope with a VOR tuned, so the GS flag stays out. It's normal and doesn't affect the CDI.
References
- Instrument Flying Handbook (FAA-H-8083-15B) PDFSee Chapter 9, Navigation Systems: VHF Omnidirectional Range (VOR).
- Aeronautical Information Manual, Chapter 1, Section 1See 1-1-3, VHF Omni-directional Range (VOR).
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