时间：2011-04-18 00:52来源：蓝天飞行翻译 作者：航空 点击：次
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(See AIRMET.)(See CONVECTIVE SIGMET.)(See CWA.)(See SIGMET.)SFA. (See SINGLE FREQUENCY APPROACH.)SFO. (See SIMULATED FLAMEOUT.)Pilot/Controller Glossary SHF. (See SUPER HIGH FREQUENCY.)SHORT RANGE CLEARANCE. A clearance issued to a departing IFR flight which authorizes IFR flight to a specific fix short of the destination while air traffic control facilities are coordinating and obtaining the complete clearance. SHORT TAKEOFF AND LANDING AIRCRAFT. An aircraft which, at some weight within its approved operating weight, is capable of operating from a runway in compliance with the applicable STOL characteristics, airworthiness, operations, noise, and pollution standards. (See VERTICAL TAKEOFF AND LANDING AIRCRAFT.)SIAP. (See STANDARD INSTRUMENT APPROACH PROCEDURE.)SID. (See STANDARD INSTRUMENT DEPARTURE.)SIDESTEP MANEUVER. A visual maneuver accomplished by a pilot at the completion of an instrument approach to permit a straight-in landing on a parallel runway not more than 1,200 feet to either side of the runway to which the instrument approach was conducted. (Refer to AIM.)SIGMET. A weather advisory issued concerning weather significant to the safety of all aircraft. SIGMET advisories cover severe and extreme turbulence, severe icing, and widespread dust or sandstorms that reduce visibility to less than 3 miles. (See AIRMET.)(See AWW.)(See CONVECTIVE SIGMET.)(See CWA.)(See ICAO term SIGMET INFORMATION.)(Refer to AIM.)SIGMET INFORMATION [ICAO]. Information issued by a meteorological watch office concerning the occurrence or expected occurrence of specified en-route weather phenomena which may affect the safety of aircraft operations. SIGNIFICANT METEOROLOGICAL INFOR-MATION. (See SIGMET.)SIGNIFICANT POINT. A point, whether a named intersection, a NAVAID, a fix derived from a PCG S.3 NAVAID(s), or geographical coordinate expressed in degrees of latitude and longitude, which is established for the purpose of providing separation, as a reporting point, or to delineate a route of flight. SIMPLIFIED DIRECTIONAL FACILITY. A NAVAID used for nonprecision instrument ap-proaches. The final approach course is similar to that of an ILS localizer except that the SDF course may be offset from the runway, generally not more than 3 degrees, and the course may be wider than the localizer, resulting in a lower degree of accuracy. (Refer to AIM.)SIMULATED FLAMEOUT. A practice approach by a jet aircraft (normally military) at idle thrust to a runway. The approach may start at a runway (high key) and may continue on a relatively high and wide downwind leg with a continuous turn to final. It terminates in landing or low approach. The purpose of this approach is to simulate a flameout. (See FLAMEOUT.)SIMULTANEOUS ILS APPROACHES. An ap-proach system permitting simultaneous ILS/MLS approaches to airports having parallel runways separated by at least 4,300 feet between centerlines. Integral parts of a total system are ILS/MLS, radar, communications, ATC procedures, and appropriate airborne equipment. (See PARALLEL RUNWAYS.)(Refer to AIM.)SIMULTANEOUS MLS APPROACHES. (See SIMULTANEOUS ILS APPROACHES.)SINGLE DIRECTION ROUTES. Preferred IFR Routes which are sometimes depicted on high altitude en route charts and which are normally flown in one direction only. (See PREFERRED IFR ROUTES.)(Refer to AIRPORT/FACILITY DIRECTORY.)SINGLE FREQUENCY APPROACH. A service provided under a letter of agreement to military single-piloted turbojet aircraft which permits use of a single UHF frequency during approach for landing. Pilots will not normally be required to change frequency from the beginning of the approach to touchdown except that pilots conducting an en route descent are required to change frequency when control is transferred from the air route traffic control center to the terminal facility. The abbreviation “SFA” in the DOD FLIP IFR Supplement under “Communications” indicates this service is available at an aerodrome. SINGLE-PILOTED AIRCRAFT. A military turbo-jet aircraft possessing one set of flight controls, tandem cockpits, or two sets of flight controls but operated by one pilot is considered single-piloted by ATC when determining the appropriate air traffic service to be applied. (See SINGLE FREQUENCY APPROACH.)SKYSPOTTER. A pilot who has received special-ized training in observing and reporting inflight weather phenomena. SLASH. A radar beacon reply displayed as an elongated target. SLDI. (See SECTOR LIST DROP INTERVAL.)SLOT TIME. (See METER FIX TIME/SLOT TIME.)SLOW TAXI. To taxi a float plane at low power or low RPM. SN. (See SYSTEM STRATEGIC NAVIGATION.)SPEAK SLOWER. Used in verbal communications as a request to reduce speech rate. SPECIAL ACTIVITY AIRSPACE (SAA). Any airspace with defined dimensions within the National Airspace System wherein limitations may be imposed upon aircraft operations. This airspace may be restricted areas, prohibited areas, military operations areas, air ATC assigned airspace, and any other designated airspace areas. The dimensions of this airspace are programmed into URET and can be designated as either active or inactive by screen entry. Aircraft trajectories are constantly tested against the dimensions of active areas and alerts issued to the applicable sectors when violations are predicted. (See USER REQUEST EVALUATION TOOL.)SPECIAL EMERGENCY. A condition of air piracy or other hostile act by a person(s) aboard an aircraft which threatens the safety of the aircraft or its passengers. SPECIAL INSTRUMENT APPROACH PROCE-DURE. (See INSTRUMENT APPROACH PROCEDURE.)PCG S.4 SPECIAL USE AIRSPACE. Airspace of defined dimensions identified by an area on the surface of the earth wherein activities must be confined because of their nature and/or wherein limitations may be imposed upon aircraft operations that are not a part of those activities. Types of special use airspace are: |
