FAA advisory circulars containing subject matter specifically related to Air Traffic Control and General Operations are issued under which subject number?

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To set the high intensity runway lights on medium intensity, the pilot should click the microphone seven times, then click it

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(Refer to figure 9, area A.) How should the flight controls be held while taxiing a tricycle-gear equipped airplane into a left quartering headwind?

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FAA advisory circulars containing subject matter specifically related to Airspace are issued under which subject number?

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