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 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.