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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 CIRCLE- 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 segments
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.)
c. Final Approach- The segment between the final
approach fix or point and the runway, airport, or
missed approach point.
(See ICAO term FINAL APPROACH SEGMENT.)
d. Missed Approach- The segment between the
missed approach point or the point of arrival at
2/14/08 Pilot/Controller Glossary
PCG S-3
decision height and the missed approach fix at the
prescribed altitude.
(Refer to 14 CFR Part 97.)
(See ICAO term MISSED APPROACH
PROCEDURE.)
SEPARATION- In air traffic control, the spacing of
aircraft to achieve their safe and orderly movement in
flight and while landing and taking off.
(See SEPARATION MINIMA.)
(See ICAO term SEPARATION.)
SEPARATION [ICAO]- Spacing between aircraft,
levels or tracks.
SEPARATION MINIMA- The minimum longitudinal,
lateral, or vertical distances by which aircraft are
spaced through the application of air traffic control
procedures.
(See SEPARATION.)
SERVICE- A generic term that designates functions
or assistance available from or rendered by air traffic
control. For example, Class C service would denote
the ATC services provided within a Class C airspace
area.
SEVERE WEATHER AVOIDANCE PLAN- An
approved plan to minimize the affect of severe
weather on traffic flows in impacted terminal and/or
ARTCC areas. SWAP is normally implemented to
provide the least disruption to the ATC system when
flight through portions of airspace is difficult or
impossible due to severe weather.
SEVERE WEATHER FORECAST ALERTSPreliminary
messages issued in order to alert users
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