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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 14
Chapter I
Part 77 - PART 77—SAFE, EFFICIENT USE, AND PRESERVATION OF THE NAVIGABLE AIRSPACE
Subpart A [§ 77.1 - § 77.3] - Subpart A—General
Subpart B [§ 77.5 - § 77.11] - Subpart B—Notice Requirements
Subpart C [§ 77.13 - § 77.23] - Subpart C—Standards for Determining Obstructions to Air Navigation or Navigational Aids or Facilities
Subpart D [§ 77.25 - § 77.35] - Subpart D—Aeronautical Studies and Determinations
Subpart E [§ 77.37 - § 77.41] - Subpart E—Petitions for Discretionary Review
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