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IR.I.C.S2FAA-S-ACS-8C · 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

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. PHAK ch. 16 (p. 16-12) — FAA-H-8083-25C (2023)
  2. 14 CFR 91.167 (Fuel requirements for flight in IFR conditions.) — eCFR current as of 2026-03-05
  3. PHAK ch. 2 (p. 2-22) — FAA-H-8083-25C (2023)
  4. RMH ch. 5 (p. 5-1) — FAA-H-8083-2A
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