No person may release an aircraft over any route or route segment unless communication and navigation facilities equal to those required by § 121.121 are in satisfactory operating condition.
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14 CFR · PART 121
§ 121.609 Communication and navigation facilities: Supplemental operations.
Official text · Current as of Oct 19, 2026 · from eCFR
Not legal advice. This is the official text as published in the eCFR, which is updated daily but is not the legal edition. For legal purposes, use the annual Code of Federal Regulations or ask an aviation attorney.