IR.I.C.K1bFAA-S-ACS-8C · Nov 2023Knowledge

b. Special use airspace

ACS element text (the applicant demonstrates understanding of)

Route planning, including consideration of: b. Special use airspace

Bottom line

Special use airspace is the designation for airspace in which certain activities must be confined or where limitations may be imposed on aircraft operations that are not part of those activities. In the United States, all direct routes should be planned to avoid prohibited or restricted airspace by at least 3 NM. If a bend in a direct route is required to avoid special use airspace, the turning point needs to be part of the flight plan.

Key numbers

Key numbers for b. Special use airspace
NumberWhat it means
at least 3 NM from prohibited or restricted airspace, for all direct routes in the United StatesDirect route buffer

FAA references

  1. IFH ch. 1 (p. 1-2) — FAA-H-8083-15B
  2. IPH ch. 2 (p. 2-28) — FAA-H-8083-16B
  3. PHAK ch. 15 (p. 15-3) — FAA-H-8083-25C (2023)
  4. PHAK ch. 2 (p. 2-9) — FAA-H-8083-25C (2023)
  5. PHAK ch. 16 (p. 16-18) — FAA-H-8083-25C (2023)
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