QCodes

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Code Question Answer Application
QMI Report the vertical distribution of cloud [at ... (position or zone)] as observed from your aircraft. The vertical distribution of cloud as observed from my aircraft at ... hours at ... (position or zone) is : lowest layer observed* ... eights (... type) with base of ... (figures and units) and tops of ... (figures and units) [*and similarly in sequence for each of the layers observed.] height above ... (datum). Aeronautical Code signals
QMU What is the surface temperature at ... (place) and what is the dew point temperature at that place? The surface temperature at ... (place) at ... hours is ... degrees and the dew point temperature at that time and place is ... degrees. Aeronautical Code signals
QMW At ... (position or zone) what is (are) the flight level(s)/altitude(s) ... of the zero Celsius isotherm(s)? At ... (position or zone) the zero Celsius isotherm(s) is (are) at flight level(s)/altitude(s) ... Aeronautical Code signals
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
QMZ Have you any amendments to the flight forecast in respect of section of route yet to be traversed? The following amendment(s) should be made to the flight forecast … [If no amendments, signal QMZ NIL] Aeronautical Code signals
QNE What indication will my altimeter give on landing at ... (place) at ... hours, my sub-scale being set to 1013.2 millibars (29.92 inches)? On landing at ... (place) at ... hours, with your sub-scale being set to 1013.2 millibars (29.92 inches), your altimeter will indicate ... (figures and units). 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
QNI May I join the net? You may check in... Amateur Radio
QNI Between what heights above ... (datum) has turbulence been observed at ... (position or zone)? Turblence has been observed at ... (position or zone) with an intensity of ... between ... (figures and units) and ... (figures and units) heights above ... (datum). Aeronautical Code signals
QNO I am not equipped to give the information (or provide the facility) requested. Aeronautical Code signals