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AI.II.I.S4FAA-S-ACS-25 · Nov 2023Skills

Recalculate fuel reserves based on a scenario provided by the evaluator.

ACS element text (the applicant demonstrates understanding of)

Recalculate fuel reserves based on a scenario provided by the evaluator.

Bottom line

The amount of fuel needed for a given flight can be calculated by multiplying the estimated flight time by the rate of consumption. Since the rate of fuel consumption remains relatively constant at a given TAS, you must use GS to calculate fuel consumption when wind is present.

FAA references

  1. 14 CFR 91.151 (Fuel requirements for flight in VFR conditions.) — eCFR current as of 2026-03-05
  2. AIH ch. 1 (p. 1-21) — FAA-H-8083-9B
  3. PHAK ch. 16 (p. 16-12) — FAA-H-8083-25C (2023)
  4. PHAK ch. 16 (p. 16-35) — FAA-H-8083-25C (2023)
  5. AIH ch. 1 (p. 1-20) — FAA-H-8083-9B
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