時間：2011-04-18 00:52來源：藍(lán)天飛行翻譯 作者：航空 點擊：次
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(See PREFERRED IFR ROUTES.)PREFERRED IFR ROUTES. Routes established between busier airports to increase system efficiency and capacity. They normally extend through one or more ARTCC areas and are designed to achieve balanced traffic flows among high density terminals. IFR clearances are issued on the basis of these routes except when severe weather avoidance procedures or other factors dictate otherwise. Preferred IFR Routes are listed in the Airport/Facility Directory. If a flight is planned to or from an area having such routes but the departure or arrival point is not listed in the Airport/Facility Directory, pilots may use that part of a Preferred IFR Route which is appropriate for the departure or arrival point that is listed. Preferred IFR Routes are correlated with DPs and STARs and may be defined by airways, jet routes, direct routes PCG P.3 between NAVAIDs, Waypoints, NAVAID radials/ DME, or any combinations thereof. (See CENTER’S AREA.)(See INSTRUMENT DEPARTURE PROCEDURE.)(See PREFERENTIAL ROUTES.)(See STANDARD TERMINAL ARRIVAL.)(Refer to AIRPORT/FACILITY DIRECTORY.)(Refer to NOTICES TO AIRMEN PUBLICATION.)PRE-FLIGHT PILOT BRIEFING. (See PILOT BRIEFING.)PREVAILING VISIBILITY. (See VISIBILITY.)PRIMARY RADAR TARGET. An analog or digital target, exclusive of a secondary radar target, presented on a radar display. PRM. (See ILS PRM APPROACH and PRECISION RUNWAY MONITOR.)PROCEDURE TURN. The maneuver prescribed when it is necessary to reverse direction to establish an aircraft on the intermediate approach segment or final approach course. The outbound course, direction of turn, distance within which the turn must be completed, and minimum altitude are specified in the procedure. However, unless otherwise restricted, the point at which the turn may be commenced and the type and rate of turn are left to the discretion of the pilot. (See ICAO term PROCEDURE TURN.)PROCEDURE TURN [ICAO]. A maneuver in which a turn is made away from a designated track followed by a turn in the opposite direction to permit the aircraft to intercept and proceed along the reciprocal of the designated track. Note 1: Procedure turns are designated “left” or “right” according to the direction of the initial turn. Note 2: Procedure turns may be designated as being made either in level flight or while descending, according to the circumstances of each individual approach procedure. PROCEDURE TURN INBOUND. That point of a procedure turn maneuver where course reversal has been completed and an aircraft is established inbound on the intermediate approach segment or final approach course. A report of “procedure turn inbound” is normally used by ATC as a position report for separation purposes. (See FINAL APPROACH COURSE.)(See PROCEDURE TURN.)(See SEGMENTS OF AN INSTRUMENT APPROACH PROCEDURE.)PROFILE DESCENT. An uninterrupted descent (except where level flight is required for speed adjustment; e.g., 250 knots at 10,000 feet MSL) from cruising altitude/level to interception of a glideslope or to a minimum altitude specified for the initial or intermediate approach segment of a nonprecision instrument approach. The profile descent normally terminates at the approach gate or where the glideslope or other appropriate minimum altitude is intercepted. PROGRESS REPORT. (See POSITION REPORT.)PROGRESSIVE TAXI. Precise taxi instructions given to a pilot unfamiliar with the airport or issued in stages as the aircraft proceeds along the taxi route. PROHIBITED AREA. (See SPECIAL USE AIRSPACE.)(See ICAO term PROHIBITED AREA.)PROHIBITED AREA [ICAO]. An airspace of defined dimensions, above the land areas or territorial waters of a State, within which the flight of aircraft is prohibited. PROPOSED BOUNDARY CROSSING TIME. Each center has a PBCT parameter for each internal airport. Proposed internal flight plans are transmitted to the adjacent center if the flight time along the proposed route from the departure airport to the center boundary is less than or equal to the value of PBCT or if airport adaptation specifies transmission regardless of PBCT. PROPOSED DEPARTURE TIME. The time that the aircraft expects to become airborne. PROTECTED AIRSPACE. The airspace on either side of an oceanic route/track that is equal to one-half the lateral separation minimum except where reduction of protected airspace has been authorized. PT. (See PROCEDURE TURN.)PTP. (See POINT.TO.POINT.)PCG P.4 PTS. (See POLAR TRACK STRUCTURE.)PUBLISHED INSTRUMENT APPROACH PROCEDURE VISUAL SEGMENT. A segment on an IAP chart annotated as “Fly Visual to Airport” or “Fly Visual.” A dashed arrow will indicate the visual flight path on the profile and plan view with an Pilot/Controller Glossary associated note on the approximate heading and distance. The visual segment should be flown as a dead reckoning course while maintaining visual conditions. PUBLISHED ROUTE. A route for which an IFR altitude has been established and published; e.g., Federal Airways, Jet Routes, Area Navigation Routes, Specified Direct Routes. PCG P.5 Q Q ROUTE. ‘Q’ is the designator assigned to published RNAV routes used by the United States. QNE. The barometric pressure used for the standard altimeter setting (29.92 inches Hg.). QNH. The barometric pressure as reported by a particular station. QUADRANT. A quarter part of a circle, centered on a NAVAID, oriented clockwise from magnetic north as follows: NE quadrant 000-089, SE quadrant 090-179, SW quadrant 180-269, NW quadrant 270-359. QUEUING. (See STAGING/QUEUING.)QUICK LOOK. A feature of the EAS and ARTS which provides the controller the capability to display full data blocks of tracked aircraft from other control positions. |
