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Private Pilot Airplane practice question 25

(Refer to FAA-CT-8080-2H, Figure 35.) Determine the approximate manifold pressure setting with 2,450 RPM to achieve 65 percent maximum continuous power at 6,500 feet with a temperature of 36°F higher than standard.

FAA-CT-8080-2H, Figure 35. Airplane Power Setting Table. U.S. Government work (public domain). Source PDF. Tap to enlarge.

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Correct answer: C. 21.0 inches Hg.

Use the ISA +20 °C (+36 °F) columns. At 2,450 RPM the manifold pressure is 21.0 in. Hg at 6,000 feet and 20.8 at 8,000 feet. Interpolating to 6,500 feet gives about 20.95, or 21.0 in. Hg.

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Question 25 from the FAA document Private Pilot-Airplane (PAR) Sample Questions (U.S. Government work, public domain) · ACS/LSC code PA.I.F.K1. The FAA does not publish an answer key; the answer and explanation are ours, with references. Verify against the current regulations and handbooks.