Page 427 - PPL-engelsk 2025

Communication

4.12.3.1 QDM, QDR, QTE, QUJ

When you are unsure of your navigation, you can get the following directions:

QDM = Magnetic bearing to station

QDR = Magnetic bearing from station (radial)

QTE = True bearing from station

QUJ = True bearing to station

The latter two can be drawn directly on your flight chart and have nothing to

do with radio direction finding.

In connection with radio direction finding, you only need to know QDM and

QDR.

Memorization rule:

- QDM is QD-MOD (Towards the station)

- QDR is QD-RADIAL

A call for a bearing could sound like this:

 Roskilde Tower OY-CTZ

O-TZ Roskilde Tower

 O-TZ requests QDM

O-TZ Roskilde Tower QDM 270 degrees

 QDM 270 degrees O-TZ

What does that tell us? Yes, the magnetic direction Towards Roskilde is 270

degrees. The plane is east of Roskilde. You correct for any crosswinds and fly

towards Roskilde. You can then get a new QDM and see if the wind correction

has been correct, or if the course needs to be changed.

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Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 427