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Which of the following Q codes are solely used to communicate directions and bearings in RTF air-ground communications?
  • A
    QFE and QNH.
  • B
    QDM and QDR.
  • C
    QNH and QDR.
  • D
    QDM and QFE.
Aviation Q-Codes
  • QDM - Magnetic heading TO a station (Magnetic to the station).
  • QDR - Magnetic bearing FROM a station (Magnetic from the station).
  • QTE - True bearing FROM a station (True from the station).
  • QUJ - True heading TO a station (True to the station).
  • QFU - Magnetic orientation of runway.
  • QFE - air pressure reduced to the datum level of the airport applying corrections for the outside air temperature.
  • QNH - QFE reduced to mean sea level using the assumed conditions of standard atmosphere and the elevation of the airport.

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