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Regulations last checked for updates: Dec 15, 2025
Title 14 - Aeronautics and Space last revised: Nov 03, 2025
All Titles
Title 14
Chapter I
Part 121
Subpart F - Subpart F—Approval of Areas and Routes for Supplemental Operations
§ 121.111 - Applicability.
§ 121.113 - Area and route requirements: General.
§ 121.115 - Route width.
§ 121.117 - Airports: Required data.
§ 121.119 - Weather reporting facilities.
§ 121.121 - En route navigation facilities.
§ 121.122 - Communications facilities—supplemental operations.
§ 121.123 - Servicing maintenance facilities.
§ 121.125 - Flight following system.
§ 121.127 - Flight following system; requirements.
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