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Performance and weight and balanceQuestion 862 of 934

A pilot must interpolate a performance chart. Which approach gives a margin of safety?

  1. Use values that reflect slightly more adverse conditions
  2. Use values that reflect slightly better than standard conditions
  3. Use the lowest value in the table
  4. Use the average of all values in the table
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Correct answer: Use values that reflect slightly more adverse conditions

Using slightly more adverse values gives a reasonable estimate and a slight margin of safety.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 11: Aircraft Performance — Interpolation, page 276

Practice performance and weight and balance

Questions last reviewed: 18 October 2026