Pilot/Controller
Glossary

STRAIGHT-IN APPROACH IFR- An instrument
approach wherein final approach is begun without
first having executed a procedure turn, not
necessarily completed with a straight-in landing or
made to straight-in landing minimums.
(See LANDING MINIMUMS.)
(See STRAIGHT-IN APPROACH VFR.)
(See STRAIGHT-IN LANDING.)

STRAIGHT-IN APPROACH VFR- Entry into the
traffic pattern by interception of the extended runway
centerline (final approach course) without executing
any other portion of the traffic pattern.
(See TRAFFIC PATTERN.)

STRAIGHT-IN LANDING- A landing made on a
runway aligned within 30 of the final approach
course following completion of an instrument
approach.
(See STRAIGHT-IN APPROACH IFR.)

STRAIGHT-IN LANDING MINIMUMS-
(See LANDING MINIMUMS.)

STRAIGHT-IN MINIMUMS-
(See STRAIGHT-IN LANDING MINIMUMS.)

STRATEGIC PLANNING- Planning whereby
solutions are sought to resolve potential conflicts.
sUAS-
(See SMALL UNMANNED AIRCRAFT
SYSTEM.)

SUBSTITUTE ROUTE- A route assigned to pilots
when any part of an airway or route is unusable
because of NAVAID status. These routes consist of:
a. Substitute routes which are shown on U.S.
Government charts.
b. Routes defined by ATC as specific NAVAID
radials or courses.
c. Routes defined by ATC as direct to or between
NAVAIDs.
SUNSET AND SUNRISE- The mean solar times of
sunset and sunrise as published in the Nautical
Almanac, converted to local standard time for the
locality concerned. Within Alaska, the end of evening
civil twilight and the beginning of morning civil
twilight, as defined for each locality.
SUPPLEMENTAL WEATHER SERVICE LOCATION- Airport facilities staffed with contract
personnel who take weather observations and
provide current local weather to pilots via telephone

Pilot/Controller Glossary

or radio. (All other services are provided by the parent
FSS.)
SUPPS- Refers to ICAO Document 7030 Regional
Supplementary Procedures. SUPPS contain
procedures for each ICAO Region which are unique
to that Region and are not covered in the worldwide
provisions identified in the ICAO Air Navigation
Plan. Procedures contained in Chapter 8 are based in
part on those published in SUPPS.
SURFACE AREA- The airspace contained by the
lateral boundary of the Class B, C, D, or E airspace
designated for an airport that begins at the surface and
extends upward.
SURFACE METERING PROGRAM- A capability
within Terminal Flight Data Manager that provides
the user with the ability to tactically manage surface
traffic flows through adjusting desired minimum and
maximum departure queue lengths to balance surface
demand with capacity. When a demand/capacity
imbalance for a surface resource is predicted, a
metering procedure is recommended.
SURFACE VIEWER- A capability within the
Traffic Flow Management System that provides
situational awareness for a user-selected airport. The
Surface Viewer displays a top-down view of an
airport depicting runways, taxiways, gate areas,
ramps, and buildings. The display also includes icons
representing aircraft and vehicles currently on the
surface, with identifying information. In addition, the
display includes current airport configuration
information such as departure/arrival runways and
airport departure/arrival rates.
SURPIC- A description of surface vessels in the area
of a Search and Rescue incident including their
predicted positions and their characteristics.
(Refer to FAA Order JO 7110.65, Para 10-6-4,
INFLIGHT CONTINGENCIES.)

SURVEILLANCE APPROACH- An instrument
approach wherein the air traffic controller issues
instructions, for pilot compliance, based on aircraft
position in relation to the final approach course
(azimuth), and the distance (range) from the end of
the runway as displayed on the controller"s radar
scope. The controller will provide recommended
altitudes on final approach if requested by the pilot.
(Refer to AIM.)

SUSPICIOUS UAS" Suspicious UAS operations
may include operating without authorization,