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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.
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.
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
Pilot/Controller Glossary 2/19/04
PCG S−2
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.)
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. Rightof-
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.)
　
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