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Refer to figure.
Calculate the range with 70 gallons of fuel onboard, given the following information:

Cruise altitude: 8 000 ft
ISA DEV: 0°c
RPM: 2 300
Manifold pressure: 28
TWC: 30 kt

  • A
    705 NM
  • B
    974 NM
  • C
    1 052 NM
  • D
    1 148 NM
Refer to figure.
Using the table provided, find the TAS and Fuel consumption:
  • Enter the second table at 2300 RPM and 28.0 MAP. Continue horizontally to the right until you intersect the ISA 0ºC columns.
    => Read the values of 187 kt TAS and 15.6 GPH.
Calculate the endurance of 70 gallons:
  • Endurance = Fuel onborad / Fuel consumption
    Endurance = 70 / 15.6 GPH
    Endurance = 4.49 h

Calculate the range:
  • Ground Speed = TAS + Tailwind
    Ground Speed = 187 kt + 30 kt = 217 kt
  • Range = Endurance x Ground Speed
    Range = 4.49 h x 217 kt = approx. 974 NM

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