The pilot should maintain the airway using his own navigational equipment if ATC instructs him to "Resume own navigation" after being vectored to an airway. This shows that vectoring has been halted by ATC.
Used by ATC to alert an aircraft that it has been located on a controller's display using an authorized ATC surveillance source and that radar flight following will continue until the radar service is terminated.
außerhalb of any Class B or Class C airspace; and. Below a Class B or Class C airspace area specified for an airport's ceiling, or 10,000 feet.
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