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Pilot/Controller Glossary

3/29/18

PCG R−3

radar which can be provided by a controller to a pilot

of a radar identified aircraft.

a. 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.

When being applied specifically to radar monitoring

of instrument approaches; i.e., with precision

approach radar (PAR) or radar monitoring of

simultaneous ILS,RNAV and GLS approaches, it

includes advice and instructions whenever an aircraft

nears or exceeds the prescribed PAR safety limit or

simultaneous ILS RNAV and GLS no transgression

zone.

(See ADDITIONAL SERVICES.)
(See TRAFFIC ADVISORIES.)

b. Radar Navigational Guidance− Vectoring

aircraft to provide course guidance.

c. Radar Separation− Radar spacing of aircraft in

accordance with established minima.

(See ICAO term RADAR SERVICE.)

RADAR SERVICE [ICAO]− Term used to indicate

a service provided directly by means of radar.

a. Monitoring− The use of radar for the purpose of

providing aircraft with information and advice

relative to significant deviations from nominal flight

path.

b. Separation− The separation used when aircraft

position information is derived from radar sources.
RADAR SERVICE TERMINATED− Used by ATC

to inform a pilot that he/she will no longer be

provided any of the services that could be received

while in radar contact. Radar service is automatically

terminated, and the pilot is not advised in the

following cases:

a. An aircraft cancels its IFR flight plan, except

within Class B airspace, Class C airspace, a TRSA,

or where Basic Radar service is provided.

b. An aircraft conducting an instrument, visual, or

contact approach has landed or has been instructed to

change to advisory frequency.

c. An arriving VFR aircraft, receiving radar

service to a tower-controlled airport within Class B

airspace, Class C airspace, a TRSA, or where

sequencing service is provided, has landed; or to all

other airports, is instructed to change to tower or

advisory frequency.

d. An aircraft completes a radar approach.

RADAR SURVEILLANCE− The radar observation

of a given geographical area for the purpose of

performing some radar function.
RADAR TRAFFIC ADVISORIES− Advisories

issued to alert pilots to known or observed radar

traffic which may affect the intended route of flight

of their aircraft.

(See TRAFFIC ADVISORIES.)

RADAR TRAFFIC INFORMATION SERVICE−

(See TRAFFIC ADVISORIES.)

RADAR VECTORING [ICAO]− Provision of

navigational guidance to aircraft in the form of

specific headings, based on the use of radar.
RADIAL− A magnetic bearing extending from a

VOR/VORTAC/TACAN navigation facility.
RADIO−

a. A device used for communication.
b. Used to refer to a flight service station; e.g.,

“Seattle Radio” is used to call Seattle FSS.
RADIO ALTIMETER− Aircraft equipment which

makes use of the reflection of radio waves from the

ground to determine the height of the aircraft above

the surface.
RADIO BEACON−

(See NONDIRECTIONAL BEACON.)

RADIO DETECTION AND RANGING−

(See RADAR.)

RADIO MAGNETIC INDICATOR− An aircraft

navigational instrument coupled with a gyro compass

or similar compass that indicates the direction of a

selected NAVAID and indicates bearing with respect

to the heading of the aircraft.
RAIS−

(See REMOTE AIRPORT INFORMATION

SERVICE.)

RAMP−

(See APRON.)

RANDOM ALTITUDE− An altitude inappropriate

for direction of flight and/or not in accordance with

FAA Order JO 7110.65, Paragraph 4−5−1, VER-

TICAL SEPARATION MINIMA.
RANDOM ROUTE− Any route not established or

charted/published or not otherwise available to all

users.
RC−

(See ROAD RECONNAISSANCE.)