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7/31/08 Pilot/Controller Glossary PCG-1 PILOT/CONTROLLER GLOSSARY PURPOSE a. This Glossary was compiled to promote a common understanding of the terms used in the Air Traffic Control system. It includes those terms which are intended for pilot/controller communications. Those terms most frequently used in pilot/controller communications are printed in bold italics. The definitions are primarily defined in an operational sense applicable to both users and operators of the National Airspace System. Use of the Glossary will preclude any misunderstandings concerning the system's design, function, and purpose. b. Because of the international nature of flying, terms used in the Lexicon, published by the International Civil Aviation Organization (ICAO), are included when they differ from FAA definitions. These terms are followed by “[ICAO].” For the reader's convenience, there are also cross references to related terms in other parts of the Glossary and to other documents, such as the Code of Federal Regulations (CFR) and the Aeronautical Information Manual (AIM). c. This Glossary will be revised, as necessary, to maintain a common understanding of the system. EXPLANATION OF CHANGES a. Terms Added: AUTOMATIC FLIGHT INFORMATION SERVICE (AFIS) - ALASKA FSS ONLY b. Editorial/format changes were made where necessary. Revision bars were not used due to the insignificant nature of the changes.
2/14/08 Pilot/Controller Glossary PCG A-1 A AAI- (See ARRIVAL AIRCRAFT INTERVAL.) AAR- (See AIRPORT ARRIVAL RATE.) ABBREVIATED IFR FLIGHT PLANS- An authorization by ATC requiring pilots to submit only that information needed for the purpose of ATC. It includes only a small portion of the usual IFR flight plan information. In certain instances, this may be only aircraft identification, location, and pilot request. Other information may be requested if needed by ATC for separation/control purposes. It is frequently used by aircraft which are airborne and desire an instrument approach or by aircraft which are on the ground and desire a climb to VFR‐on‐top. (See VFR‐ON‐TOP.) (Refer to AIM.) ABEAM- An aircraft is “abeam” a fix, point, or object when that fix, point, or object is approximately 90 degrees to the right or left of the aircraft track. Abeam indicates a general position rather than a precise point. ABORT- To terminate a preplanned aircraft maneuver; e.g., an aborted takeoff. ACC [ICAO]- (See ICAO term AREA CONTROL CENTER.) ACCELERATE‐STOP DISTANCE AVAILABLEThe runway plus stopway length declared available and suitable for the acceleration and deceleration of an airplane aborting a takeoff. ACCELERATE‐STOP DISTANCE AVAILABLE [ICAO]- The length of the take‐off run available plus the length of the stopway if provided. ACDO- (See AIR CARRIER DISTRICT OFFICE.) ACKNOWLEDGE- Let me know that you have received my message. (See ICAO term ACKNOWLEDGE.) ACKNOWLEDGE [ICAO]- Let me know that you have received and understood this message. ACL- (See AIRCRAFT LIST.) ACLS- (See AUTOMATIC CARRIER LANDING SYSTEM.) ACLT- (See ACTUAL CALCULATED LANDING TIME.) ACROBATIC FLIGHT- An intentional maneuver involving an abrupt change in an aircraft's attitude, an abnormal attitude, or abnormal acceleration not necessary for normal flight. (See ICAO term ACROBATIC FLIGHT.) (Refer to 14 CFR Part 91.) ACROBATIC FLIGHT [ICAO]- Maneuvers intentionally performed by an aircraft involving an abrupt change in its attitude, an abnormal attitude, or an abnormal variation in speed. ACTIVE RUNWAY- (See RUNWAY IN USE/ACTIVE RUNWAY/DUTY RUNWAY.) ACTUAL CALCULATED LANDING TIMEACLT is a flight's frozen calculated landing time. An actual time determined at freeze calculated landing time (FCLT) or meter list display interval (MLDI) for the adapted vertex for each arrival aircraft based upon runway configuration, airport acceptance rate, airport arrival delay period, and other metered arrival aircraft. This time is either the vertex time of arrival (VTA) of the aircraft or the tentative calculated landing time (TCLT)/ACLT of the previous aircraft plus the arrival aircraft interval (AAI), whichever is later. This time will not be updated in response to the aircraft's progress. ACTUAL NAVIGATION PERFORMANCE (ANP)- (See REQUIRED NAVIGATION PERFORMANCE.) ADDITIONAL SERVICES- Advisory information provided by ATC which includes but is not limited to the following: www.aero.cn 航空翻譯 www.aviation.cn 本文鏈接地址：PILOT/CONTROLLER GLOSSARY飛行員/管制員詞匯表
