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What is the orgin for the blocked static port rule-of-thumb
Asked by: Student Pilot 4936 views Instrument Rating
Static instruments - when the normal static source is blocked and you use the alternate inside the cabin I have been told to use the 7/7 rule. The Airspeed indicator will read 7kts faster and the altimeter will read 70ft higher. Do you know how these numbers came about or any more information on it?
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