## RADAR BEACON- 

(See RADAR.) 

RADAR CLUTTER [ICAO]- The visual indication on a radar display of unwanted signals. 

## RADAR CONTACT- 

a. Used by ATC to inform an aircraft that it is identified using an approved ATC surveillance source on an air traffic controller's display and that radar flight following will be provided until radar service is terminated. Radar service may also be provided within the limits of necessity and capability. When a pilot is informed of “radar contact,” he/she automatically discontinues reporting over compuls- ory reporting points. 

(See ATC SURVEILLANCE SOURCE.) 

(See RADAR CONTACT LOST.) 

(See RADAR FLIGHT FOLLOWING.) 

(See RADAR SERVICE.) 

(See RADAR SERVICE TERMINATED.) 

(Refer to AIM.) 

b. The term used to inform the controller that the aircraft is identified and approval is granted for the aircraft to enter the receiving controllers airspace. 

(See ICAO term RADAR CONTACT.) 

RADAR CONTACT [ICAO]- The situation which exists when the radar blip or radar position symbol of a particular aircraft is seen and identified on a radar display. 

RADAR CONTACT LOST- Used by ATC to inform a pilot that the surveillance data used to determine the aircraft's position is no longer being received, or is no longer reliable and radar service is no longer being provided. The loss may be attributed to several factors including the aircraft merging with weather or ground clutter, the aircraft operating below radar line of sight coverage, the aircraft entering an area of poor radar return, failure of the aircraft's equipment, or failure of the surveillance equipment. 

(See CLUTTER.) 

(See RADAR CONTACT.) 

RADAR ENVIRONMENT- An area in which radar service may be provided. 

(See ADDITIONAL SERVICES.) 

(See RADAR CONTACT.) 

(See RADAR SERVICE.) 

(See TRAFFIC ADVISORIES.) 

RADAR FLIGHT FOLLOWING- The observation of the progress of radar-identified aircraft, whose primary navigation is being provided by the pilot, wherein the controller retains and correlates the aircraft identity with the appropriate target or target symbol displayed on the radar scope. 

(See RADAR CONTACT.) 

(See RADAR SERVICE.) 

(Refer to AIM.) 

RADAR IDENTIFICATION- The process of ascertaining that an observed radar target is the radar return from a particular aircraft. 

(See RADAR CONTACT.) 

(See RADAR SERVICE.) 

RADAR IDENTIFIED AIRCRAFT- An aircraft, the position of which has been correlated with an observed target or symbol on the radar display. 

(See RADAR CONTACT.) 

(See RADAR CONTACT LOST.) 

## RADAR MONITORING- 

(See RADAR SERVICE.) 

RADAR NAVIGATIONAL GUIDANCE- (See RADAR SERVICE.) 

RADAR POINT OUT- An action taken by a controller to transfer the radar identification of an aircraft to another controller if the aircraft will or may enter the airspace or protected airspace of another controller and radio communications will not be transferred. 

RADAR REQUIRED- A term displayed on charts and approach plates and included in FDC NOTAMs to alert pilots that segments of either an instrument approach procedure or a route are not navigable because of either the absence or unusability of a NAVAID. The pilot can expect to be provided radar navigational guidance while transiting segments labeled with this term. 

(See RADAR ROUTE.) 

(See RADAR SERVICE.) 

RADAR ROUTE- A flight path or route over which an aircraft is vectored. Navigational guidance and altitude assignments are provided by ATC. 

(See FLIGHT PATH.) 

(See ROUTE.) 

## RADAR SEPARATION- 

(See RADAR SERVICE.) 

RADAR SERVICE- A term which encompasses one or more of the following services based on the use of 

