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navigation acronyms, abbreviations and definitions - International ...

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absolute accuracy (geodetic or geographic accuracy)<br />

The accuracy of a position with respect to the geographic or geodetic<br />

coordinates of the earth (IMO).<br />

AC Admiralty Chart<br />

AC Advisory Circular (FAA)<br />

ac aircraft<br />

AC altocumulus cloud<br />

AC Analysis Centre (IGS)<br />

AC(YPS) Act Activity Centres (Young Persons’ Safety) Act 1995 (UK)<br />

Acacia Project to develop a definitive, consistent <strong>and</strong> joined-up national<br />

infrastructure of property addresses <strong>and</strong> related data with the<br />

related mapping. OS, HMLR, RoS, Valuation Office Agency<br />

(VOA), Improvement <strong>and</strong> Development Agency (IDeA) <strong>and</strong> Royal<br />

Mail.<br />

ACARE Advisory Council for Aeronautics Research in Europe<br />

ACARS Aircraft Communications Addressing <strong>and</strong> Reporting System (ARINC)<br />

Civil air data link for air-to-ground business <strong>and</strong> ATS messages.<br />

ACAS Airborne Collision Avoidance System (=TCAS in USA)<br />

ACAS-II current from 2000. M<strong>and</strong>atory in Europe for ac >5,700 kg<br />

MTOW or >19 pax seats from 1 Jan 05.<br />

Acc altocumulus castellanus cloud<br />

ACCa adaptive cruise control<br />

ACCa Antarctic Circumpolar Current<br />

ACCb area control centre (ATC - international; ARTCC in US)<br />

ACCC Aviation Crisis Coordination Cell<br />

ACCLAIM Antarctic Circumpolar Current Levels by Altimetry <strong>and</strong> Isl<strong>and</strong><br />

Contributes to the World Ocean Circulation Experiment (WOCE)<br />

of the World Climate Research Programme.<br />

accuracy The degree of conformance between the estimated or measured<br />

parameter of a craft at a given time <strong>and</strong> its true parameter at that<br />

time (IMO).<br />

ACDS Aeronautical Charts <strong>and</strong> Data Section (CAA - moved to NATS 2009)<br />

ACE Advanced Composition Explorer (NASA 1997 solar wind monitor sat)<br />

ACE Advanced Configurable EGI<br />

ACE ATM Cost-Effectiveness (EUROCONTROL Benchmarking Report)<br />

ACEA Association des Constructeurs Européens d'Automobiles<br />

Represents the interests of 13 European car, truck <strong>and</strong> bus<br />

manufacturers.<br />

ACEM Agence de Coopération pour l’Europe de la Mer (= ECMA)<br />

ACF autocorrelation function<br />

ACFD advanced civil flight deck<br />

ACG ATM/CNS Consultancy Group (EATCHIP - EUROCONTROL)<br />

3<br />

March 2012

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