QCodes

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Code Question Answer Application
QGD Are there on my track any obstructions whose elevation equals or exceeds my altitude? There are obstructions on your track ... (figures and units) height above ... (datum). Aeronautical Code signals
QHI Are you (or is ...) … 1) waterborne? 2) on land? I am (or ... is) … 1) waterborne 2) on land at ... hours. Aeronautical Code signals
QSC Are you a cargo vessel? [AP13] Are you a low traffic ship? [AP14] I am a cargo vessel. [AP13] I am a low traffic ship. [AP14] All services
QSH Are you able to home on your direction-finding equipment? I am able to home on my D/F equipment (on station ...). All services
QRM Are you being interfered with? [AP13] Is my transmission being interfered with? [AP14] I am being interfered with [AP13] Your transmission is being interfered with ... [AP14] (1. nil 2. slightly 3. moderately 4. severely 5. extremely). All services
QRL Are you busy? I am busy (or I am busy with ...). Please do not interfere. All services
QRL Are you busy? I am busy. (or I am busy with ... ) Please do not interfere. Amateur Radio
QTZ* Are you continuing the search? I am continuing the search for ... (aircraft, ship, survival craft, survivors or wreckage). All services
QAZ Are you experiencing communication difficulties through flying in a storm? I am experiencing communication difficulties through flying in a storm. 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