14 CFR Subpart C
Standards for Determining Obstructions to Air Navigation or Navigational Aids or Facilities
July 13, 2020
§
77.13
Applicability
§
77.15
Scope
§
77.17
Obstruction standards
§
77.19
Civil airport imaginary surfaces
§
77.21
Department of Defense (DOD) airport imaginary surfaces
§
77.23
Heliport imaginary surfaces
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