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[PA.I.G.K1c] What is the primary purpose of carburetor heat in a piston-engine aircraft?

[PA.VII.A.R2] What is the “back side of the power curve”?

[PA.II.B.K1] At a minimum, passengers must have their safety belts fastened during which phases of flight?

[PA.VIII.E.K2] During an unusual attitude recovery, why should power be reduced before pulling back in a nose-low unusual attitude?

[PA.XII.A.K1] After securing the aircraft, why should flight control locks (gust locks) be installed?

[PA.I.E.K2] Referring to FAA-CT-8080-2H, what symbol on a sectional chart indicates an obstruction that exceeds 1,000 feet AGL?

[PA.I.E.K2] Referring to sectional aeronautical chart symbols in FAA-CT-8080-2H, what does a blue segmented circle around an airport indicate?

[PA.I.D.K4] Which of the following is a required element on a VFR flight plan filed with a flight service station?

[PA.II.D.K3] How is directional control primarily maintained when taxiing a tricycle-gear aircraft on the ground?

The Nyquist theorem states that the sampling frequency must be at least twice the highest frequency to prevent aliasing.