時間：2011-08-13 13:07來源：藍(lán)天飛行翻譯 作者：航空 點擊：次
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CLOSED RUNWAY - A runway that is unusable for aircraft operations. Only the airport management/military operations office can close a runway. CLOSED TRAFFIC - Successive operations involving take-off and landing or low approaches where the aircraft does not exit the traffic pattern. CLUTTER (P/CG) - In radar operations, clutter refers to the reception and visual display of radar returns caused by precipitation, chaff, terrain, numerous aircraft targets, or other phenomena. Such returns may limit or preclude Air Traffic Control from providing services based on radar. (See Ground Clutter, Chaff, Precipitation, Target) CLUTTER (JCS) - Permanent echoes, cloud, or other atmospheric echo on radar scope, or contact has entered scope clutter. CLUTTER (ICAO) - The visual indication on a radar display of unwanted signals. COASTAL FIX - A navigation aid or intersection where an aircraft transitions between the domestic route structure and the oceanic route structure. CODES/TRANSPONDER CODES - The number assigned to a particular multiple pulse reply signal transmitted by a transponder. (See Discrete Code) COMBINED CENTER-RAPCON/CERAP - An air traffic facility which combines the functions of an Air Route Traffic Control Center and a Radar Approach Control facility. (See Air Route Traffic Control Center/ARTCC, Radar Approach Control/Facility) COMMON POINT - A significant point over which two or more aircraft will report passing or have reported passing before proceeding on the same or diverging tracks. To establish/maintain longitudinal separation, a controller may determine a common point not originally in the aircraft's flight plan and then clear the aircraft to fly over the point. See significant point. COMMON ROUTE/COMMON PORTION - That segment of a North American route between the inland navigation facility and the coastal fix. designed for the purpose of carrying out airport advisory practices while operating to or from an uncontrolled airport. The CTAF may be a UNICOM, MULTICOM, Flight Service Station, or tower frequency and is identified in appropriate aeronautical publications. COMPASS LOCATOR - A low power, Low or Medium Frequency (L/MF) radio beacon installed at the site of the Outer or Middle Marker of an Instrument Landing System (ILS). It can be used for navigation at distance of approximately 15 miles or as authorized in the approach procedure. (1) OUTER COMPASS LOCATOR/LOM - A compass locator installed at the site of the Outer Marker of an Instrument Landing System. (See Outer Marker) (2)
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