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QBM
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Has ... sent any messages for me?
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Here is the message sent by ... at ... hours.
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Aeronautical Code signals
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QBN
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Are you flying between two layers of cloud?
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I am flying between two layers of cloud and at flight level/altitude ...
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Aeronautical Code signals
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QBO
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What is the nearest aerodrome at which flight under VFR is permissible and which would be suitable for my landing?
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Flying under VFR is permissible at ... (place) which would be suitable for your landing.
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Aeronautical Code signals
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QBP
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Are you flying in and out of cloud?
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I am flying in and out of cloud and at flight level/altitude ...
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Aeronautical Code signals
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QBS
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Ascend (or descend) to ... (figures and units) height above ... (datum) before encountering instrument meteorological conditions or if visibility falls below ... (distance figures and units) and advise.
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Aeronautical Code signals
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QBT
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What is the runway visual range at ... (place)?
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The runway visual range at ... (place) at ... hours is ... (distance figures and units).
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Aeronautical Code signals
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QBV
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Have you reached flight level/altitude ... [or ... (area or place)]?
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I have reached ... flight level/altitude ... [or ... (area or place)].
Report reaching flight level/altitude ... [or ... (area or place)].
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Aeronautical Code signals
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QBX
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Have you left ... flight level/altitude ... [or ... (area or place)]?
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I have left ... flight level/altitude ... [or ... (area or place)].
Report leaving flight level/altitude ... [or ... (area or place)].
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Aeronautical Code signals
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QBZ
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Report your flying conditions in relation to clouds.
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The reply to QBZ ? is given by the appropriate answer form of signals QBF, QBG, QBH, QBK, QBN and QBP.
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Aeronautical Code signals
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QCA
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May I change my flight level/altitude from ... to ... ?
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You may change your flight level/altitude from ... to …
I am changing my flight level/altitude from ... to …
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Aeronautical Code signals
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