QCodes

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Code Question Answer Application
QMX What is the air temperature [at ... (position or zone)] (at ... hours) at flight level/altitude ...? At ... (position or zone) at ... hours the air temperature is ... (degrees and units) at flight level/altitude … Note.- Aircraft reporting QMX information will transmit the temperature figures as corrected for airspeed. Aeronautical Code signals
QNH What should I set on the subscale of my altimeter so that the instrument would indicate its elevation if my aircraft were on the ground at your station? If you set the subscale of your altimeter to read ... millibars, the instrument would indicate its elevation if your aircraft were on the ground at my station at ... hours. Note.- When the setting is given in hundredths of inch the AbbreviationINS is used to identify the units. Aeronautical Code signals
QJI Will you transmit a continuous … 1) mark? 2) space? I am transmitting a continuous… 1) mark. 2) space. Aeronautical Code signals
QDV Are you flying in a flight visibility of less than ... (figures and units)? I am flying in a flight visibility of less than ... (figures and units) at flight level/altitude ... Aeronautical Code signals
QBH Are you flying below cloud? I am flying below cloud and at flight level/altitude … Maintain a vertical distance of ... (figures and units) below cloud. Aeronautical Code signals
QBG Are you flying above cloud? I am flying above cloud and at flight level/altitude … Maintain a vertical distance of ... (figures and units) above clouds, smoke, haze or fog levels. Aeronautical Code signals
QBF Are you flying in cloud? I am flying in cloud at ... flight level/altitude ... [and I am ascending (descending) to flight level/altitude ...]. Aeronautical Code signals
QBE I am about to wind in my aerial. Aeronautical Code signals
QBD How much fuel have you remaining (expressed as hours and/or minutes of consumption)? My fuel endurance is ... (hours and/or minutes). Aeronautical Code signals
QBB What is the amount, type and height above official aerodrome elevation of the base of the cloud [at ... (place)]? The amount, type and height above official aerodrome elevation of the base of the cloud at ... (place) at ... hours is: ... eights (... type) at ... (figures and units) height above official aerodrome elevation. Aeronautical Code signals