Definitions

 
MTOW Maximum take-off weight
MTWA Maximum Takeoff Weight Authorized
Q-code Code system developed when air-to-ground communication was by wireless telegraphy, enabling many routine phrases and questions to be reduced to three letters. Now largely redundant, except these:
  • QDM magnetic bearing to a direction-finding station.
  • QDR magnetic bearing from the station.
  • QFE atmospheric pressure at aerodrome elevation. With its sub-scale set to the aerodrome QFE an altimeter will indicate height above that airfield.
  • QFU magnetic orientation of runway in use.
  • QNE reading in feet on an altimeter set to 1013.2 millibars (standard pressure) when the aircraft is at aerodrome elevation.
  • QNH altitude above mean sea level based on local station pressure.
  • QTE true line of position from a direction-finding station.
  • QUJ true bearing

 

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