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AI.II.G.K5FAA-S-ACS-25 · Nov 2023Knowledge

Special visual flight rules (VFR) requirements.

ACS element text (the applicant demonstrates understanding of)

Special visual flight rules (VFR) requirements.

Bottom line

The applicant demonstrates instructional knowledge by describing and explaining: Special visual flight rules (VFR) requirements.

Key numbers

Key numbers for Special visual flight rules (VFR) requirements.
NumberWhat it means
at least 1 statute mile, except for helicoptersFlight vis
at least 1 statute mile for takeoff or landing, except helicoptersGround vis
between sunrise and sunset, except for helicopters, unless IFR-qualifiedTime of day

FAA references

  1. 14 CFR 91.157 (Special VFR weather minimums.) — eCFR current as of 2026-03-05
  2. AIM 4-4-6 (Special VFR Clearances) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
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  • Full teaching sections: What special VFR is; The rule, paragraph by paragraph; How to request it
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  • Common mistakes paired with the FAA facts that correct them
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