FAA figures/8080-2H/Figure 35

Figure 35: Airplane power setting table

FAA-CT-8080-2H · Sport, Recreational, Private & Remote Pilot supplement · asked on the Private Pilot test

FAA Figure 35Airplane power setting tableFAA-CT-8080-2H · Sport, Recreational, Private & Remote Pilot supplement
How to read it: Pick the block for the ISA deviation in the question (ISA, +20 °C or -20 °C), then the row for pressure altitude; read manifold pressure for the RPM asked.

1 FAA question that refer to this figure

  1. Question 1 · Private Pilot

    (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.

    • A.19.8 inches Hg.
    • B.20.8 inches Hg.
    • C.21.0 inches Hg.
    Show answer and explanation

    Correct: C. 21.0 inches Hg.

    A temperature 36 degrees F above standard means using the ISA +20 C (+36 F) section of Figure 35. At 2,450 RPM, manifold pressure is 21.0 in. Hg at 6,000 feet and 20.8 in. Hg at 8,000 feet. Interpolating for 6,500 feet: 21.0 - (500/2,000 x 0.2) = 20.95, about 21.0 in. Hg. 20.8 is the 8,000-foot value, and 19.8 comes from the ISA -20 C table.

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