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CA.I.E.R1FAA-S-ACS-7B · Nov 2023Risk management

Various classes and types of airspace.

ACS element text (the applicant demonstrates understanding of)

Various classes and types of airspace.

Bottom line

Class G airspace extends from the surface to the base of the overlying Class E airspace, and although ATC has no authority or responsibility to control air traffic there, VFR minimums still apply. Special use airspace is airspace where activities must be confined because of their nature, or where limitations are imposed on aircraft operations that are not part of those activities, or both. Regardless of weather conditions, an ATC clearance is required prior to operating within Class B airspace.

FAA references

  1. 14 CFR 91.135 (Operations in Class A airspace.) — eCFR current as of 2026-03-05
  2. AIM 3-2-2 (Class A Airspace) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  3. AIM 3-2-3 (Class B Airspace) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  4. PHAK ch. 15 (pp. 15-2–15-3) — FAA-H-8083-25C (2023)
  5. Chart Users' Guide: Explanation of VFR Terms and Symbols — effective 22 January 2026
  6. AIM 3-4-1 (General) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  7. AIM 3-4-2 (Prohibited Areas) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  8. 14 CFR 91.133 (Restricted and prohibited areas.) — eCFR current as of 2026-03-05
  9. AIM 3-4-3 (Restricted Areas) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  10. AIM 3-4-4 (Warning Areas) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  11. AIM 3-4-5 (Military Operations Areas) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  12. AIM 3-4-6 (Alert Areas) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  13. AIM 3-4-7 (Controlled Firing Areas) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  14. AIM 3-4-8 (National Security Areas) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  15. 14 CFR 91.141 (Flight restrictions in the proximity of the Presidential and other parties.) — eCFR current as of 2026-03-05
  16. 14 CFR 91.143 (Flight limitation in the proximity of space flight operations.) — eCFR current as of 2026-03-05
  17. 14 CFR 91.137 (Temporary flight restrictions in the vicinity of disaster/hazard areas.) — eCFR current as of 2026-03-05
  18. 14 CFR 91.145 (Management of aircraft operations in the vicinity of aerial demonstrations and major sporting events.) — eCFR current as of 2026-03-05
  19. PHAK ch. 15 (p. 15-6) — FAA-H-8083-25C (2023)
  20. AIM 3-5-3 (Temporary Flight Restrictions) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
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