Sec. 87.351  Frequency changes.

    When the aeronautical utility frequency is required to be changed 
because of an action by the FAA or the

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Commission (such as a change in the ground control of unicom frequency) 
the licensee must submit an application for modification to specify the 
new frequency within 10 days from the date the station begins operation 
on the new frequency. The licensee has temporary authority to use the 
new frequency from the date of the change pending receipt of the 
modified license.

           Subpart M--Aeronautical Search and Rescue Stations