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then received back at the transmitter/receiver site for
processing and display at an air traffic control facility.
(See INTERROGATOR.)
(See TRANSPONDER.)
(See ICAO term RADAR.)
(Refer to AIM.)
RADAR [ICAO]- A radio detection device which
provides information on range, azimuth and/or
elevation of objects.
a. Primary Radar- Radar system which uses
reflected radio signals.
b. Secondary Radar- Radar system wherein a
radio signal transmitted from a radar station initiates
the transmission of a radio signal from another
station.
RADAR ADVISORY- The provision of advice and
information based on radar observations.
(See ADVISORY SERVICE.)
RADAR ALTIMETER-
(See RADIO ALTIMETER.)
RADAR APPROACH- An instrument approach
procedure which utilizes Precision Approach Radar
(PAR) or Airport Surveillance Radar (ASR).
(See AIRPORT SURVEILLANCE RADAR.)
(See INSTRUMENT APPROACH
PROCEDURE.)
(See PRECISION APPROACH RADAR.)
(See SURVEILLANCE APPROACH.)
(See ICAO term RADAR APPROACH.)
(Refer to AIM.)
RADAR APPROACH [ICAO]- An approach,
executed by an aircraft, under the direction of a radar
controller.
RADAR APPROACH CONTROL FACILITY- A
terminal ATC facility that uses radar and nonradar
capabilities to provide approach control services to
aircraft arriving, departing, or transiting airspace
controlled by the facility.
(See APPROACH CONTROL SERVICE.)
a. Provides radar ATC services to aircraft
operating in the vicinity of one or more civil and/or
military airports in a terminal area. The facility may
provide services of a ground controlled approach
(GCA); i.e., ASR and PAR approaches. A radar
approach control facility may be operated by FAA,
USAF, US Army, USN, USMC, or jointly by FAA
and a military service. Specific facility nomenclatures
are used for administrative purposes only and
are related to the physical location of the facility and
the operating service generally as follows:
1. Army Radar Approach Control (ARAC)
(Army).
2. Radar Air Traffic Control Facility (RATCF)
(Navy/FAA).
3. Radar Approach Control (RAPCON) (Air
Force/FAA).
4. Terminal Radar Approach Control
(TRACON) (FAA).
5. Air Traffic Control Tower (ATCT) (FAA).
(Only those towers delegated approach control
authority.)
RADAR ARRIVAL- An aircraft arriving at an
airport served by a radar facility and in radar contact
with the facility.
(See NONRADAR.)
Pilot/Controller Glossary 2/14/08
PCG R-2
RADAR BEACON-
(See RADAR.)
RADAR CLUTTER [ICAO]- The visual indication
on a radar display of unwanted signals.
RADAR CONTACTa.
Used by ATC to inform an aircraft that it is
identified on the radar display and radar flight
following will be provided until radar identification
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 compulsory
reporting points.
(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 radar 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 transponder, or failure of
the ground radar 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
　
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