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When creating an FMS waypoint using a VOR/DME reference, which of the following three elements must be entered?

  • A

    Select the waypoint page, enter the GPS track, and enter the altitude.

  • B

    Select the VOR/DME station, enter the magnetic bearing, and enter the slant range.

  • C

    Select the VOR/DME station, enter the true bearing, and enter the air distance.

  • D

    Select the VOR/DME station, enter the radial, and enter the ground distance (DME distance).

If you apply some logic, this is a relatively straightforward question that can be answered by process of elimination.

Select the waypoint page, enter the GPS track, and enter the altitude --> INCORRECT. The question asks for a waypoint based on a VOR/DME, so the very least you need is some reference to the relevant VOR/DME. This answer is basically rubbish.

Select the VOR/DME station, enter the magnetic bearing, and enter the slant range --> INCORRECT. VOR/DME - yes. Magnetic bearing - no. VORs have 360 radials, and every reference to a VOR is made in terms of one of those radials. If this was an NDB you could reference a bearing, but a VOR would always reference a radial for accurate position fixing. Slant range - yes. This is the raw data that will be used by the FMS.

Select the VOR/DME station, enter the true bearing, and enter the air distance --> INCORRECT. As above. VOR/DME - yes. Magnetic bearing - no. VORs have 360 radials, and every reference to a VOR is made in terms of one of those radials. If this was an NDB you could reference a bearing, but a VOR would always reference a radial. Air distance - this is not known by the DME.

Select the VOR/DME station, enter the radial, and enter the DME distance --> CORRECT. 

There is only one answer that has VOR/DME and radial, so even if you were unsure of the type of distance used, you would only have one option to pick.

Note: This is based on incomplete feedback, any information regarding wording would be appreciated.

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