Module MOD-08 · 6 min · ACS PA.I.E

Special Use Airspace and Speed Limits

← Airspace and Operating Requirementsdraft — pending CFI review

Why this matters in flight: Flying into an active restricted or prohibited area, or exceeding an airspace speed limit, is a regulatory violation and a real safety hazard. You need to recognize these areas on a chart.

Special use airspace marks where activity may be hazardous to non-participating aircraft. Prohibited areas (for example over sensitive national locations) are off-limits entirely. Restricted areas contain hazards such as artillery or missile testing and require permission to enter when active. Warning areas lie over international waters, military operations areas (MOAs) separate military training from IFR traffic, and alert areas flag a high volume of a particular activity. For speed, the general rule below 10,000 feet MSL is a 250-knot limit. Inside Class C or D at or below 2,500 feet AGL within 4 nautical miles of the primary airport, and beneath a Class B shelf, the limit drops to 200 knots.

Key terms

Prohibited area
Airspace where flight is not allowed.
MOA
Military Operations Area; use caution and check whether it is active.

Summary

Know prohibited/restricted/warning/MOA/alert areas. Speed: 250 kt below 10,000 MSL; 200 kt under a Class B shelf and in the C/D speed zone.

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What is the maximum indicated airspeed below 10,000 feet MSL?

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Sources

Every claim traces to a source — paraphrased knowledge elements pointing at the governing FAA publication; not yet verified against a retrieved source.

  • AIM 3-4 / sectional legend — Aeronautical Information Manual unverified
  • 14 CFR 91.117 — 14 CFR Part 91 — General Operating and Flight Rules unverified

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