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Cruise power

0 viewsOct 7, 2026

How to read the 172S cruise table: RPM, percent power, true airspeed and fuel flow, with real rows at 6,000 ft. Why a quarter more speed costs almost 50 % more fuel, and how far one gallon takes you.

What you learn

  • Read RPM, % BHP, KTAS and GPH in the cruise table
  • Pick a cruise power between 45 and 75 %
  • See what each extra knot costs in fuel
  • Work out nautical miles per US gallon