Page 33 - GEN - 2025
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than A.L.T.I.M.E.T.E.R. S.E.T.T.I.N.G. S.E.A. L.E.V.E.L. P.R.E.S.S.U.R.E.!
Today some Q-codes are still widely used because they are useful abbreviations.
They are spoken in plain English not phonetically.
Commonly used Q codes are listed below.
Q CODE MEANING
QFE Atmospheric pressure at aerodrome elevation
QNH Altimeter sub-scale setting to obtain altitude above mean sea level
QDM Magnetic direction towards facility
QDR Magnetic bearing (radial) from a facility
QTE True bearing from a facility
QUJ True bearing to a facility
7.3.2 VHF DF (VDF)
Most air traffic control units (usually on Approach Frequency) are able to give
pilots bearing or direction information based upon the pilot’s transmission. The
direction finding equipment can give a “steer”(QDM) towards the aerodrome or
the pilot’s true (or magnetic) bearing from the airfield (QTE or QDR).
The pilot in this case could also request a steer e.g.
“QDM QDM QDM Roskilde Approach SE-GPD request QDM SE-GPD”
the transmission ends with the aircraft call sign repeated.
NOTE: The heading takes no account of wind effects (drift).
7.3.2.1 Class of Bearing
The class of bearing refers to the accuracy of the bearing information as follows:
Class A within ± 2°
Class B within ± 5°
Class C within ± 10°
Class D less accurate than Class C
GEN radio 2025 - Midtjysk Flyveskole 33
