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PA.I.H.K1kFAA-S-ACS-6C · November 2023Knowledge

Optical illusions

ACS element text (the applicant demonstrates understanding of)

Symptoms, recognition, causes, effects, and corrective actions associated with aeromedical and physiological issues, including: k. Optical illusions

Bottom line

Visual appearance can mislead approach height and flight attitude.

FAA references

  1. PHAK ch. 17, Aeromedical Factors — FAA-H-8083-25C (2023)
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