AI.II.P.K3FAA-S-ACS-25 · Nov 2023Knowledge

Effects of atmospheric conditions on performance.

ACS element text (the applicant demonstrates understanding of)

Effects of atmospheric conditions on performance.

Bottom line

Regardless of the actual altitude of the aircraft, it will perform as though it were operating at an altitude equal to the existing density altitude.

Key numbers

Key numbers for Effects of atmospheric conditions on performance.
NumberWhat it means
15 °C / 59 °F at sea level (standard atmosphere)Std temp
29.92 inHg / 1013.2 mb at sea level (standard atmosphere)Std pressure

FAA references

  1. PHAK ch. 4 (p. 4-4) — FAA-H-8083-25C (2023)
  2. PHAK ch. 11 (pp. 11-1–11-2) — FAA-H-8083-25C (2023)
  3. AFH ch. 13 (p. 13-2) — FAA-H-8083-3C
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