15 / 20

Refer to figure.
Proceeding on route A, how can you verify reaching turning point 2 by using radio aids?
Remark: Radials and bearings are approximate.

  • A

    I tune in VLM VOR/DME (114.30 MHz) radial 330 together with the corresponding DME reading.

  • B

    I tune in VLM VOR/DME (114.30 MHz) radial 280 together with the corresponding DME reading.

  • C

    I tune in VOZ VOR/DME (116.95 MHz) radial 280 together with the corresponding DME reading.

  • D

    I tune in VOZ VOR/DME (116.95 MHz) radial 330 together with the corresponding DME reading.

Refer to figure.
A turning point can be verified using a VOR/DME navigational aid, through a radial and a DME distance, if tuning in its frequency.

Radial is a magnetic bearing extending from a VOR (QDR). DME distance is a slant distance from a DME.

1. Two VOR/DMEs can be used to verify turning point 2:

  • VOZ VOR/DME on frequency 116.95 MHz
  • VLM VOR/DME on frequency 114.30 MHz

2. The circle around the VORs works as a protractor, which is aligned with the Magnetic north. Thus, any straight line emanating from the centre of the VOR symbol represents a magnetic bearing or radial (or QDR).

3. Using the circle-protractor, draw a straight line from each VOR/DME symbol, to find the radial which passes through turning point 2:

  • The radial from VLM VOR/DME (114.30 MHz), which passes through turning point 2 is R330.
  • The radial from VOZ VOR/DME (116.95 MHz), which passes through turning point 2 is R002.

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