RADAR CONTACT - The term air traffic controllers use to indicate that an aircraft is identified on the radar display and that radar service can be provided until radar identification is lost or radar service is terminated.
RADAR FLIGHT FOLLOWING - The radar tracking of identified aircraft targets and the observation of the progress of such flight sufficiently to retain identity.
RADAR HANDOFF - That action whereby radar identification of, radio communications with and, unless otherwise specified, control responsibility for an aircraft is transferred from one controller to another without interruption of radar flight following.
RADAR SERVICE - A term which encompasses one or more of the following services based on the use of radar which can be provided by a controller to a pilot of a radar-identified aircraft.
- Radar Separation - Radar spacing of aircraft in accordance with established minima.
- Radar Navigational Guidance - Vectoring aircraft to provide course guidance.
- Radar Monitoring - The radar flight following of aircraft, whose primary navigation is being performed by the pilot, to observe and note deviations from its authorized flight path airway, or route. This includes noting aircraft position relative to approach fixes and major obstructions.
RADAR SURVEILLANCE - The radar observation of a given geographical area for the purpose of performing some radar function.
RADAR TARGET - The indication shown on a radar display resulting from a primary radar return or a radar beacon reply.
RADAR TRAFFIC INFORMATION - Information on any aircraft observed on the radar scope which, in the judgment of the controller, appears to constitute a hazard to the operation of an aircraft being controlled.
RADAR VECTOR - A heading issued to an aircraft to provide navigational guidance by radar.
RADIAL - A magnetic bearing extending from a VOR/VORTAC/TACAN.
