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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. Term inal 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 inform ed 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
symbol displayed on the radar scope.
(See RADAR CONTACT.)
(See RADAR SERVICE.)
(Refer to AIM.)
RADAR IDENTIFIC ATION- The process of
ascertaining that an observed radar target is the radar
return from a particular aircraft.
(See RADAR CONTACT.)
(See RADAR SERVICE.)
(See ICAO term RADAR IDENTIFICATION.)
RADAR IDENTIFICATION [ICAO]- The process
of correlating a particular radar blip or radar position
symbol with a specific aircraft.
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.)
Pilot/Controller Glossary 2/14/08
PCG R-3
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.
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/MLS approaches, it includes
advice and instructions whenever an aircraft nears or
exceeds the prescribed PAR safety limit or
simultaneous ILS/MLS 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.
RADIOa. 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
FAAO JO 7110.65, Para 4-5-1, VERTIC AL
SEPARATION MINIMA.
Pilot/Controller Glossary 2/14/08
PCG R-4
RANDOM ROUTE- Any route not established or
charted/published or not otherwise available to all
users.
RC(See ROAD RECONNAISSANCE.)
RCAG(See REMOTE COMMUNICATIONS
AIR/GROUND FACILITY.)
RCC(See RESCUE COORDINATION CENTER.)
RCO(See REMOTE COMMUNICATIONS OUTLET.)
RCR(See RUNWAY CONDITION READING.)
READ BACK- Repeat my message back to me.
RECEIVER AUTONOMOUS INTEGRITY MON
ITORING (RAIM)- A technique whereby a civil
GNSS receiver/processor determines the integrity of
the GNSS navigation signals without reference to
sensors or non-DoD integrity systems other than the
receiver itself. This determination is achieved by a
consistency check among redundant pseudorange
measurements.
RECEIVING CONTROLLER- A controller/facility
receiving control of an aircraft from another
controller/facility.
RECEIVING FACILITY(See RECEIVING CONTROLLER.)
RECONFORMANCE- The automated process of
bringing an aircraft's Current Plan Trajectory into
conformance with its track.
REDUCE SPEED TO (SPEED)-
(See SPEED ADJUSTMENT.)
REIL(See RUNWAY END IDENTIFIER LIGHTS.)
RELEASE TIME- A departure time restriction
issued to a pilot by ATC (either directly or through an
authorized relay) when necessary to separate a
departing aircraft from other traffic.
(See ICAO term RELEASE TIME.)
RELEASE TIME [ICAO]- Time prior to which an
aircraft should be given further clearance or prior to
which it should not proceed in case of radio failure.
REMOTE AIRPORT ADVISORY (RAA)- A
remote service which may be provided by facilities,
which are not located on the landing airport, but have
a discrete ground-to-air communication frequency
or tower frequency when the tower is closed,
automated weather reporting with voice available to
the pilot at the landing airport, and a continuous
ASOS/AWOS data display, other direct reading
instruments, or manual observation is available to the
AFSS specialist.
REMOTE AIRPORT INFORMATION SERVICE
(RAIS)- A temporary service provided by facilities,
which are not located on the landing airport, but have
communication capability and automated weather
reporting available to the pilot at the landing airport.
REMOTE COMMUNICATIONS AIR/GROUND
FACILITY- An unmanned VHF/UHF transmitter/
receiver facility which is used to expand ARTCC
air/ground communications coverage and to facilitate
direct contact between pilots and controllers. RCAG
facilities are sometimes not equipped with emergency frequencies 121.5 MHz and 243.0 MHz.
(Refer to AIM.)
REMOTE COMMUNICATIONS OUTLET- An
unmanned communications facility remotely controlled by air traffic personnel. RCOs serve FSSs.
RTRs serve terminal ATC facilities. An RCO or RTR
may be UHF or VHF and will extend the
communication range of the air traffic facility. There
are several classes of RCOs and RTRs. The class is
determ ined by the number of transmitters or
receivers. Classes A through G are used primarily for
air/ground purposes. RCO and RTR class O
facilities are nonprotected outlets subject to
undetected and prolonged outages. RCO (O's) and
RTR (O's) were established for the express purpose
of providing ground-to-ground communications
between air traffic control specialists and pilots
located at a satellite airport for delivering en route
clearances, issuing departure authorizations, and
acknowledging instrument flight rules cancellations
or departure/landing times. As a secondary function,
they may be used for advisory purposes whenever the
aircraft is below the coverage of the primary
air/ground frequency.
REMOTE TRANSMITTER/RECEIVER(See REMOTE COMMUNICATIONS OUTLET.)
Pilot/Controller Glossary 2/14/08
PCG R-5
REPORT- Used to instruct pilots to advise ATC of
specified information; e.g., “Report passing Hamilton VOR.”
REPORTING POINT- A geographical location in
relation to which the position of an aircraft is
reported.
(See COMPULSORY REPORTING POINTS.)
(See ICAO term REPORTING POINT.)
(Refer to AIM.)
REPORTING POINT [ICAO]- A specified geographical location in relation to which the position of
an aircraft can be reported.
REQUEST FULL ROUTE CLEARANCE- Used
by pilots to request that the entire route of flight be
read verbatim in an ATC clearance. Such request
should be made to preclude receiving an ATC
clearance based on the original filed flight plan when
a filed IFR flight plan has been revised by the pilot,
company, or operations prior to departure.
REQUIRED NAVIGATION PERFORMANCE
(RNP)– A statement of the navigational performance
necessary for operation within a defined airspace.
The following terms are commonly associated with
RNP:
a. Required Navigation Performance Level or
Type (RNP-X). A value, in nautical miles (NM), from
the intended horizontal position within which an
aircraft would be at least 95-percent of the total flying
time.
b. Required Navigation Performance (RNP)
Airspace. A generic term designating airspace, route
(s), leg (s), operation (s), or procedure (s) where
minimum required navigational performance (RNP)
have been established.
c. Actual Navigation Performance (ANP). A
measure of the current estimated navigational
performance. Also referred to as Estimated Position
Error (EPE).
d. Estimated Position Error (EPE). A measure of
the current estimated navigational performance. Also
referred to as Actual Navigation Performance (ANP).
e. Lateral Navigation (LNAV). A function of area
navigation (RNAV) equipment which calculates,
displays, and provides lateral guidance to a profile or
path.
f. Vertical Navigation (VNAV). A function of area
navigation (RNAV) equipment which calculates,
displays, and provides vertical guidance to a profile
or path.
RESCUE COORDINATION CENTER- A search
and rescue (SAR) facility equipped and manned to
coordinate and control SAR operations in an area
designated by the SAR plan. The U.S. Coast Guard
and the U.S. Air Force have responsibility for the
operation of RCCs.
(See ICAO term RESCUE CO-ORDINATION
CENTRE.)
RESCUE CO-ORDINATION CENTRE [ICAO]- A
unit responsible for promoting efficient organization
of search and rescue service and for coordinating the
conduct of search and rescue operations within a
search and rescue region.
RESOLUTION ADVISORY-A display indication
given to the pilot by the traffic alert and collision
avoidance systems (TCAS II) recommending a
maneuver to increase vertical separation relative to an
intruding aircraft. Positive, negative, and vertical
speed limit (VSL) advisories constitute the resolution
advisories. A resolution advisory is also classified as
corrective or preventive
RESTRICTED AREA(See SPECIAL USE AIRSPACE.)
(See ICAO term RESTRICTED AREA.)
RESTRICTED AREA [ICAO]- An airspace of
defined dimensions, above the land areas or territorial
waters of a State, within which the flight of aircraft
is restricted in accordance with certain specified
conditions.
RESUME NORMAL SPEED- Used by ATC to
advise a pilot that previously issued speed control
restrictions are deleted. An instruction to “resume
normal speed” does not delete speed restrictions that
are applicable to published procedures of upcoming
segments of flight, unless specifically stated by ATC.
This does not relieve the pilot of those speed
restrictions which are applicable to 14 CFR
Section 91.117.
RESUME OWN NAVIGATION- Used by ATC to
advise a pilot to resume his/her own navigational
responsibility. It is issued after completion of a radar
Pilot/Controller Glossary 2/14/08
PCG R-6
vector or when radar contact is lost while the aircraft
is being radar vectored.
(See RADAR CONTACT LOST.)
(See RADAR SERVICE TERMINATED.)
RMI(See RADIO MAGNETIC INDICATOR.)
RNAV(See AREA NAVIGATION.)
(See ICAO Term AREA NAVIGATION.)
RNAV APPROACH- An instrument approach
procedure which relies on aircraft area navigation
equipment for navigational guidance.
(See AREA NAVIGATION.)
(See INSTRUMENT APPROACH
PROCEDURE.)
ROAD RECONNAISSANCE- Military activity
requiring navigation along roads, railroads, and
rivers. Reconnaissance route/route segments are
seldom along a straight line and normally require a
lateral route width of 10 NM to 30 NM and an altitude
range of 500 feet to 10,000 feet AGL.
ROGER- I have received all of your last
transmission. It should not be used to answer a
question requiring a yes or a no answer.
(See AFFIRMATIVE.)
(See NEGATIVE.)
ROLLOUT RVR(See VISIBILITY.)
ROUTE- A defined path, consisting of one or more
courses in a horizontal plane, which aircraft traverse
over the surface of the earth.
(See AIRWAY.)
(See JET ROUTE.)
(See PUBLISHED ROUTE.)
(See UNPUBLISHED ROUTE.)
ROUTE ACTION NOTIFICATION- URET notification that a PAR/PDR/PDAR has been applied to the
flight plan.
(See ATC PREFERRED ROUTE
NOTIFICATION.)
(See USER REQUEST EVALUATION TOOL.)
ROUTE SEGMENT- As used in Air Traffic Control,
a part of a route that can be defined by two
navigational fixes, two NAVAIDs, or a fix and a
NAVAID.
(See FIX.)
(See ROUTE.)
(See ICAO term ROUTE SEGMENT.)
ROUTE SEGMENT [ICAO]- A portion of a route to
be flown, as defined by two consecutive significant
points specified in a flight plan.
RSA(See RUNWAY SAFETY AREA.)
RTR(See REMOTE TRANSMITTER/RECEIVER.)
RUNWAY- A defined rectangular area on a land
airport prepared for the landing and takeoff run of
aircraft along its length. Runways are normally
numbered in relation to their magnetic direction
rounded off to the nearest 10 degrees; e.g., Runway
1, Runway 25.
(See PARALLEL RUNWAYS.)
(See ICAO term RUNWAY.)
RUNWAY [ICAO]- A defined rectangular area on a
land aerodrome prepared for the landing and take-off
of aircraft.
RUNWAY CENTERLINE LIGHTING(See AIRPORT LIGHTING.)
RUNWAY CONDITION READING- Numerical
decelerometer readings relayed by air traffic
controllers at USAF and certain civil bases for use by
the pilot in determining runway braking action.
These readings are routinely relayed only to USAF
and Air National Guard Aircraft.
(See BRAKING ACTION.)
RUNWAY END IDENTIFIER LIGHTS(See AIRPORT LIGHTING.)
RUNWAY GRADIENT- The average slope, measured in percent, between two ends or points on a
runway. Runway gradient is depicted on Government
aerodrome sketches when total runway gradient
exceeds 0.3%.
RUNWAY HEADING- The magnetic direction that
corresponds with the runway centerline extended, not
the painted runway number. When cleared to “fly or
maintain runway heading,” pilots are expected to fly
or maintain the heading that corresponds with the
extended centerline of the departure runway. Drift
correction shall not be applied; e.g., Runway 4, actual
Pilot/Controller Glossary 2/14/08
PCG R-7
magnetic heading of the runway centerline 044, fly
044.
RUNWAY IN USE/ACTIVE RUNWAY/DUTY
RUNWAY- Any runway or runways currently being
used for takeoff or landing. When multiple runways
are used, they are all considered active runways. In
the metering sense, a selectable adapted item which
specifies the landing runway configuration or
direction of traffic flow. The adapted optimum flight
plan from each transition fix to the vertex is
determined by the runway configuration for arrival
metering processing purposes.
RUNWAY LIGHTS(See AIRPORT LIGHTING.)
RUNWAY MARKINGS(See AIRPORT MARKING AIDS.)
RUNWAY OVERRUN- In military aviation exclusively, a stabilized or paved area beyond the end of a
runway, of the same width as the runway plus
shoulders, centered on the extended runway
centerline.
RUNWAY PROFILE DESCENT- An instrument
flight rules (IFR) air traffic control arrival procedure
to a runway published for pilot use in graphic and/or
textual form and may be associated with a STAR.
Runway Profile Descents provide routing and may
depict crossing altitudes, speed restrictions, and
headings to be flown from the en route structure to the
point where the pilot will receive clearance for and
execute an instrument approach procedure. A
Runway Profile Descent may apply to more than one
runway if so stated on the chart.
(Refer to AIM.)
RUNWAY SAFETY AREA- A defined surface
surrounding the runway prepared, or suitable, for
reducing the risk of damage to airplanes in the event
of an undershoot, overshoot, or excursion from the
runway. The dimensions of the RSA vary and can be
determined by using the criteria contained within
AC 150/5300-13, Airport Design, Chapter 3.
Figure_3-1 in AC 150/5300-13 depicts the RSA. The
design standards dictate that the RSA shall be:
a. Cleared, graded, and have no potentially
hazardous ruts, humps, depressions, or other surface
variations;
b. Drained by grading or storm sewers to prevent
water accumulation;
c. Capable, under dry conditions, of supporting
snow rem oval equipment, aircraft rescue and
firefighting equipment, and the occasional passage of
aircraft without causing structural damage to the
aircraft; and,
d. Free of objects, except for objects that need to
be located in the runway safety area because of their
function. These objects shall be constructed on low
impact resistant supports (frangible mounted structures) to the lowest practical height with the frangible
point no higher than 3 inches above grade.
(Refer to AC 150/5300-13, Airport Design,
Chapter 3.)
RUNWAY TRANSITIONa. Conventional STARs/SIDs. The portion of a
STAR/SID that serves a particular runway or
runways at an airport.
b. RNAV STARs/SIDs. Defines a path(s) from
the common route to the final point(s) on a STAR. For
a SID, the common route that serves a particular
runway or runways at an airport.
RUNWAY USE PROGRAM- A noise abatement
runway selection plan designed to enhance noise
abatement efforts with regard to airport communities
for arriving and departing aircraft. These plans are
developed into runway use programs and apply to all
turbojet aircraft 12,500 pounds or heavier; turbojet
aircraft less than 12,500 pounds are included only if
the airport proprietor determines that the aircraft
creates a noise problem. Runway use programs are
coordinated with FAA offices, and safety criteria
used in these programs are developed by the Office of
Flight Operations. Runway use program s are
administered by the Air Traffic Service as “Formal”
or “Informal” programs.
a. Formal Runway Use Program- An approved
noise abatement program which is defined and
acknowledged in a Letter of Understanding between
Flight Operations, Air Traffic Service, the airport
proprietor, and the users. Once established, participation in the program is mandatory for aircraft operators
and pilots as provided for in 14 CFR Section 91.129.
b. Informal Runway Use Program- An approved
noise abatement program which does not require a
Letter of Understanding, and participation in the
program is voluntary for aircraft operators/pilots.
Pilot/Controller Glossary 2/14/08
PCG R-8
RUNWAY VISIBILITY VALUE(See VISIBILITY.)
RUNWAY VISUAL RANGE(See VISIBILITY.)
Pilot/Controller Glossary 2/14/08
PCG S-1
S
SAA(See SPECIAL ACTIVITY AIRSPACE.)
SAFETY ALERT- A safety alert issued by ATC to
aircraft under their control if ATC is aware the aircraft
is at an altitude which, in the controller's judgment,
places the aircraft in unsafe proximity to terrain,
obstructions, or other aircraft. The controller may
discontinue the issuance of further alerts if the pilot
advises he/she is taking action to correct the situation
or has the other aircraft in sight.
a. Terrain/Obstruction Alert- A safety alert issued
by ATC to aircraft under their control if ATC is aware
the aircraft is at an altitude which, in the controller's
judgment, places the aircraft in unsafe proximity to
terrain/obstructions; e.g., “Low Altitude Alert, check
your altitude immediately.”
b. Aircraft Conflict Alert- A safety alert issued by
ATC to aircraft under their control if ATC is aware of
an aircraft that is not under their control at an altitude
which, in the controller's judgment, places both
aircraft in unsafe proximity to each other. With the
alert, ATC will offer the pilot an alternate course of
action when feasible; e.g., “Traffic Alert, advise you
turn right heading zero niner zero or climb to eight
thousand immediately.”
Note:_The issuance of a safety alert is contingent
upon the capability of the controller to have an
awareness of an unsafe condition. The course of
action provided will be predicated on other traffic
under ATC control. Once the alert is issued, it is
solely the pilot's prerogative to determine what
course of action, if any, he/she will take.
SAFETY LOGIC SYSTEM- A software enhancement to ASDE-3, ASDE-X, and ASDE-3X, that
predicts the path of aircraft landing and/or departing,
and/or vehicular movements on runways. Visual and
aural alarms are activated when the safety logic
projects a potential collision. The Airport Movement
Area Safety System (AMASS) is a safety logic
system enhancement to the ASDE-3. The Safety
Logic System for ASDE-X and ASDE-3X is an
integral part of the software program.
SAFETY LOGIC SYSTEM ALERTSa. ALERT- An actual situation involving two real
safety logic tracks (aircraft/aircraft, aircraft/vehicle,
or aircraft/other tangible object) that safety logic has
predicted will result in an imminent collision, based
upon the current set of Safety Logic parameters.
b. FALSE ALERT1. Alerts generated by one or more false
surface-radar targets that the system has interpreted
as real tracks and placed into safety logic.
2. Alerts in which the safety logic software did
not perform correctly, based upon the design
specifications and the current set of Safety Logic
parameters.
c. NUISANCE ALERT- An alert in which one or
more of the following is true:
1. The alert is generated by a known situation
that is not considered an unsafe operation, such as
LAHSO or other approved operations.
2. The alert is generated by inaccurate secondary radar data received by the Safety Logic System.
3. The alert is generated by surface radar targets
caused by moderate or greater precipitation.
4. One or more of the aircraft involved in the
alert is not intending to use a runway (i.e., helicopter,
pipeline patrol, non-Mode C overflight, etc.).
d. VALID NON-ALERT- A situation in which
the safety logic software correctly determines that an
alert is not required, based upon the design
specifications and the current set of Safety Logic
parameters.
e. INVALID NON-ALERT- A situation in which
the safety logic software did not issue an alert when
an alert was required, based upon the design
specifications.
SAIL BACK- A maneuver during high wind
conditions (usually with power off) where float plane
movement is controlled by water rudders/opening
and closing cabin doors.
SAME DIRECTION AIRCRAFT- Aircraft are
operating in the same direction when:
a. They are following the same track in the same
direction; or
b. Their tracks are parallel and the aircraft are
flying in the same direction; or
c. Their tracks intersect at an angle of less than 45
degrees.
Pilot/Controller Glossary 2/14/08
PCG S-2
SAR(See SEARCH AND RESCUE.)
SAY AGAIN- Used to request a repeat of the last
transmission. Usually specifies transmission or
portion thereof not understood or received; e.g., “Say
again all after ABRAM VOR.”
SAY ALTITUDE- Used by ATC to ascertain an
aircraft's specific altitude/flight level. When the
aircraft is climbing or descending, the pilot should
state the indicated altitude rounded to the nearest 100
feet.
SAY HEADING- Used by ATC to request an aircraft
heading. The pilot should state the actual heading of
the aircraft.
SCHEDULED TIME OF ARRIVAL (STA)- A STA
is the desired time that an aircraft should cross a
certain point (landing or metering fix). It takes other
traffic and airspace configuration into account. A
STA time shows the results of the TMA scheduler
that has calculated an arrival time according to
parameters such as optimized spacing, aircraft
performance, and weather.
SDF(See SIMPLIFIED DIRECTIONAL FACILITY.)
SEA LANE- A designated portion of water outlined
by visual surface markers for and intended to be used
by aircraft designed to operate on water.
SEARCH AND RESCUE- A service which seeks
missing aircraft and assists those found to be in need
of assistance. It is a cooperative effort using the
facilities and services of available Federal, state and
local agencies. The U.S. Coast Guard is responsible
for coordination of search and rescue for the Maritime
Region, and the U.S. Air Force is responsible for
search and rescue for the Inland Region. Information
pertinent to search and rescue should be passed
through any air traffic facility or be transmitted
directly to the Rescue Coordination Center by
telephone.
(See FLIGHT SERVICE STATION.)
(See RESCUE COORDINATION CENTER.)
(Refer to AIM.)
SEARCH AND RESCUE FACILITY- A facility
responsible for maintaining and operating a search
and rescue (SAR) service to render aid to persons and
property in distress. It is any SAR unit, station, NET,
or other operational activity which can be usefully
employed during an SAR Mission; e.g., a Civil Air
Patrol Wing, or a Coast Guard Station.
(See SEARCH AND RESCUE.)
SECONDARY RADAR TARGET- A target derived
from a transponder return presented on a radar
display.
SECTIONAL AERONAUTICAL CHARTS(See AERONAUTICAL CHART.)
SECTOR LIST DROP INTERVAL- A parameter
number of minutes after the meter fix time when
arrival aircraft will be deleted from the arrival sector
list.
SEE AND AVOID- When weather conditions
permit, pilots operating IFR or VFR are required to
observe and maneuver to avoid other aircraft.
Right-of-way rules are contained in 14 CFR Part 91.
SEGMENTED CIR CLE- A system of visual
indicators designed to provide traffic pattern
information at airports without operating control
towers.
(Refer to AIM.)
SEGMENTS OF AN INSTRUMENT APPROACH
PROCEDURE- An instrument approach procedure
may have as many as four separate segm ents
depending on how the approach procedure is
structured.
a. Initial Approach- The segment between the
initial approach fix and the intermediate fix or the
point where the aircraft is established on the
intermediate course or final approach course.
(See ICAO term INITIAL APPROACH
SEGMENT.)
b. Intermediate Approach- The segment between
the intermediate fix or point and the final approach
fix.
(See ICAO term INTERMEDIATE APPROACH
SEGMENT.) |
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