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U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 47Chapter IPart 87Subpart O - Subpart O—Airport Control Tower Stations
§ 87.417 - Scope of service.
§ 87.419 - Supplemental eligibility.
§ 87.421 - Frequencies.
§ 87.423 - Hours of operation.
§ 87.425 - Interference.
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