C
C : Centre (runway indentification)
C : Degree Celcius
C/A Code : Course / Acquisition Code
C/d : Capacity demand ratio
C/M : Carrier-to Multi-Path Ratio
C/N : Carrier-to-Noise Ratio
C/N0 : Carrier-to-Noise-Density Ratio
C/S : Call Sign
C102 (TSO) : Helicopter Radar Approach, Issued 04/02/84 (RTCA DO-172, Issued 03/83)
C104(TSO) : Microwave Landing System (MLS) Receiving Equipment, Issued 06/82 (RTCA DO-174, Issued 03/82)
C105(TSO) : Optional Display For Weather Radar, Issued 06/84 (RTCA DO-174, Issued 03/81)
C110(TSO) : Airborne Thunderstorm Detector, Issued 01/01/01,(RTCA DO-187, Issued 11/84
C115(TSO) : RNAV Equipment Using Multi-Sensor, Issued 06/86 (RTCA DO-187, Issued 11/84)
C118(TSO) : Airborne TCAS I Equipmen4 Issued 08/88 (RTCA DO-197, Issued 3/87)
C119(TSO) : Airborne TCAS II Equipment (RTCA Do-185, Issued 09/83)
C120(TSO) : RNAV Equipment Using OMEGA/VLF, Issued 01/88 (RTCA DO-185 issued 9/83)
C2 level : Security level in the United States Department of Defense
C31d(TSO) : High Frequency (HF) Communications
Transmitting Equipment, Issued 04/84 (RTCA DO-163, Issued 03/76)
C32d(TSO) : High Frequency (HF) Communications Receiving Equipment, Issued /83
C34e(TSO) : ILS Glide Slope Receive Equipment, Issued 01/88 (RCTA DO-192, Issued 07/86)
C35d(TSO) : Radio Marker Receiving Equipment, Issued 04/71 (RTCA DO-143, Issued 01/70)
C36e(TSO) : ILS Localizer Receiver Equipment, Issued 01/88 (RTCA) DO-195, Issued 11/86)
C37d(TSO) : VHF Comm transmitting Equipment, Issued
08181 (RTCA DO-157, Issued 08/81 (RTCA DO-157, Issued 08/74)
C38c(TSO) : VHF Comm Receiving Equipment; Issued 08/81 (RTCA DO-156, Issued 08/74)
C38d(TSO) : VHF Comm: Receiving Equipment, Issued 08/81 (RTCA DO-186, Issued 1/84)
C3CM(TSO) : Command, Control and Communications Countermeasures
C3T : Controller Tools and Transition Trials. See EVP.
C40c(TSO) : Airborne VOR Receiving Equipment, Issued 01/88 (RTCA DO-1996, Issued 11/86)
C41d(TSO) : Airborne ADF Equipment, Issued 05/86 (RTCA DO-179, Issued 05/82)
C50c(TSO) : Audio Selector Panel and Amps, Issued 01/83 (RTCA DO-170, Issued 01/80)
C57a(TSO) : Headsets And Speakers, Issued 01/83 (RTCA DO-170, Issued 01/80)
C58a : Aircraft Microphones, Issued 01/83 (RTCA DO-170, Issued 01/80)
C59 : Selective Calling (SELCAL) Equipment, Issued 01/01 (RTCA DO-93, Issued 2/59)
C60b : RNAV Equipment Using LORAN -C, Issued 05/88 (RTCA DO-194, Issued 11/86)
C63c : Airborne Weather Radar, Issued 08/83 (RTCA DO- 173 Issued 11/80)
C65a : Doppler Radar Air Speed Equipment, Issued 08/83 (RTCA DO-158, Issued 11/75)
C66b : Airborne DME (Distance Measuring Equipment), Issued 08/81 (RTCA DO-1514, Issued 04/60)
C67 : Airborne Radar Altimeters, Issued 11/64 (RTCA DO-103, Issued 4/60)
C68a : Dead Reckoning Computer Equipment, Issued 08/83 (RTCA DO-158, Issued 10/75)
C74e : Airborne ATC Transponder Equipment, Issued 01/01 (RTCA DO 161A, Issued 05/76)
C87a : Low Range Radar Altimeters, Issued 01/01 (RTCA DO-155, Issued 01/74)
C91a : Emergency Locator Transmitter, Issued 04/85 (RTCA DO-183, Issued 5/83)
C92b : Ground Proximity Warning (GPWS) Equipment, 01/01 (RTCA DO-161A, Issued 05/76)
C94a : OMEGA Receiving Equipment, Issued 08/81 (RTCA DO-164A, Issued 09/79)
C : Centigrade
CA : Canada (ISO Country Code)
CA : Civil Aviation
CA : Conflict Alert
CA : Course to an Altitude (ARINC 424 Path Terminator)
CAA : Civil Aviation Authority (Great Britain)
CAAC : Civil Aviation Authority of China
CAAS : Class A Airspace
CAAS : Computer Aided Approach Sequencing
CAB : Civil Aeronautics Board
CAC : Centralised Approach Control
CAD : Computer Aided / Assisted Design
CADAS : Computer Controlled Avionics Data Acquisition System
CADF : Centralised Airspace Data Function (ECAC)
CADIN : Czech Automated Data Interchange Network
CADS : Combined Arrival and Departure Sequencing/Study (APATSI)
CADS : Computer aided Departure System
CAE : Computer Aided Engineering
CAEP : Committee on Aviation [Environmental] Protection Emissions Operational (Measures Working Group, WG/4) ; Commission on Aviation Environmental Protection (ICAO)
CAERAF : Common American-European Reference ATN Facility
CAI : Civil Aviation Inspection
CAI : Computer Assisted Input
CAIIS : Computer Aided Imagery Interpretation System
CAIR : Confidential Aviation Incident Reporting
CAIRDE : Civil Aviation Integrated Radar Display Equipment (IRE)
CAL : Computer Aided Learning
CALLSGN : Callsign
CALM : Computer Assisted Landing Management System
CALS : Computer-aided Acquisition and Logistic Support
CAM : Computer Aided Manufacturing
CAM : Conflict Alert Message
CAMI : Civil Aeromedical Institute
CAMOS : Central ARTAS Maintenance & Operational Support
CAMPS : Computer Aided Message Processing System
CAMUS : Czech Automated Multi radar System
CAN Proj. : Croatian Air Navigation Project
CANAC : Computer Assisted National ATC Centre (B)
CANSO : Civil Air Navigation Services Organisation
CAO : Computer Assisted Operations
CAOFA : Co-ordination of Air Operations in the Forward Area
CAP : Combat Air Patrol
CAP : Controller Access Parameters
CAPAN : Capacity Analyser
CAPC : Civil Aviation Planning Committee
CAPE : Computer Assisted Planning Experiment
CAPP : CFMU/DEVD - Client Applications Section
CAPSIN : CAA Packet Switched Integrated Network (UK)
CAR : Caribbean Region
CARAT : Computer-Aided (Assited) Route Allocation Tool
CARD : CNS Applications - Research and Development
CARD : Conflict And Risk Display (ODID)
CARE : Co-operative Actions of ATM Research and Development in Eurocontrol
CARFE : Conference on Airport and Route Facility Economics (ICAO)
CART : Classification And Regression Trees
CAS : Calibrated (Computed) Air Speed
CAS : Close Air Support
CAS : Collision Avoidance System
CAS : Computerised Assessment System
CASA : Computer Assisted Slot Allocation
CASE : Computer Aided Software Engineering
CASI : CFMU Aircraft Situation Image
CASOR : Civil Area Services Operations Room
CAST : Consequences of future ATM systems for air traffic controller Selection and Training
CASTA : Controller Associate for Strategic and Technical Advice
CAT x : Category x Precision Approach (I, II of III)
CAT I Facility providing operation down to 200 feet decision height and runway visual range not less than
2600 feet.
CAT II Facility providing operation down to 100 feet decision height and runway visual range not less than
1200 feet.
CAT II a Facility providing operation with no decision height limit to and along the surface of the runway with external visual reference during final phase of landing and with a runway visual range not less than 700 feet.
Cat : Category
CAT : Clear Air Turbulence
CAT : Computer Aided Testing
CAT : Commercial Air Transport
CAT : Computer Assisted Teaching / Training
CAT : Continuous Attention Task
CATCAS : Copenhagen Air Traffic Control Automated System (DK)
CATCO : Chief ATC Operations
CATIA : TF on CNS/ATM Implementation Aspects
CATSA : Croatian air Traffic Services Authority
CATSIM : CAA Air Traffic Simulator (UK)
C-ATSU : Controlling ATS Unit
CAUTRA : Automated Computer System for Air Traffic
CAVOK : Clouds and Visibility OK (Visibility, cloud and presend weather better than prescribed values or
conditions)
CB : Central Battery
CB : Suckling Airways (airline)
CB : Cumulonimbus (meteo)
CBA : Cost Benefit Analysis
CBA : Cross Border Area
CBAS : Class B Airspace
CBSA : Class B Surface Area
C-Band : Frequency Band
CBI : Computer Based Instruction
CBN : Common Backbone Network (subnetwork RAPNET = system of the national ATS, DFS = PSN)
CBPM : Computer-Based Performance Measure
CBS : Cost/Benefit Studies
CBT : Computer Based Tool
CBT : Computer Based Training
CC : Contractual Conditions
CC : Cirrocumulus
CCA : (or CCB, CCC..etc..in sequence) corrected meteorological message (message type designator)
CCAS : Class C Airspace
CCB : Change Control Board
CCC : Cellular CNS Concept
CCC : Central Computer Complex
CCC : Command, Control and Communications
CCC : Common Core Content (of ATC Training)
CCCC : Cross Channel Co-ordination Centre
CCCI, C3I : Command, Control, Communications and Intelligence (network)
CCDS : Code Callsign Distribution System
CCF : Centralised Control Function (LATCC)
CCFT : Cold Cathode Fluorescent Tube
CCG : CEATS Co-ordination Group
C-Channel : Circuit Mode Channel
CCIP : Code-Callsign Input Position
CCIS : Closed Circuit Information System
CCL : Code Callsign List
CCLKWS : Counterclockwise
CCM : Computerized Control and Monitoring
CCMS : Committee on the Challenges of Modern Society
CCP : Circuit Switched Public Data Network
CCP : Configuration Control Plan
CCR : Cancel Contract Request
CCS : Code CallSign
CCSA : Class C Surface Area
CCTV : Closed Circuit TeleVision
CCW : Counter-Clockwise
CD : Candela
CD : Conflict Display (ODID)
CD : Council Directive
CD : Course to a DME Distance (ARINC 424 Path Terminator)
CD&A : Conflict Detection and Avoidance
CD2 : Common Digitizer 2
CD-2 : Transmission format for radar data
CDA : Client Defined Area
CDA : Conflict Display Area. Coordination Approval /
CoorDination Acceptance (message)
CDA : Current Data Authority (ICAO)
CDB : Central Data Base
CDG : Roissy Charles-de-Gaulle Airport
CDI : Coordination Information
CDI : Course Deviation Indicator
CDM : Collaborate (Cooperative) Decision Making (central
supporting features of gate to gate, and for enhancing capacity [airports])
CDMA : Code Division Multiple Access
CDN : Airspace Crossing Co-ordination Message / Coordination (message type designator)
CDP : Central Data Processing
CDP : Computer Diagnostics Program
CDPS : Central Data Processing System
CDR : Coded Departure Routes. Predefined routes used to route air traffic around areas of severe weather.
CDR : Conditional Route
CDR : Conflict Detection and Resolution
CDR : Co-ordination Request (message)
CDR : Critical Design Review
CDRL : Contracts Data Requirements List (MAS/DFS - ODS)
CD-ROM : Compact Disk / Read Only Memory
CDS : Controller Display Support
CDSEPT : Committee to Develop Standards for Educational and Psychological Testing of The American
Educational research Association, The American Psychological Association, and The National Council on
Measurement in Education.
CDT : Command Delivery Time
CDTI : Cockpit Display of Traffic Information
CDTS : Console Detailed Technical Specification
CDU : Control and Display Unit (pilots’ interface to the FMS)
CE : Committee of Management
CE : European Commission / Commission européenne
CEAC : Committee for European Airspace Co-ordination (NATO Group) renamed on 27.4.98 by the North Atlantic
Council (=NATMC)
CEAS : Class E Airspace
CEATS : Central European Air Traffic Services (Austria, Croatia, Czech Republik, Hungary, Italy, Slovakia and
Slovenia [Bosnia, Herzegowina])
CEATS LSG : Central European Air Traffic Services Legal Sub Group
CEATS UAC : Central European Air Traffic Services Upper Airspace Control Centre
CEC : Commission of the European Communities ; European Commission / Commission des Communautés
Européennes (=CEE) ; Commission européenne
CEECs : Countries of Central and Eastern Europe ; Central and Eastern Europe Countries
CEF : Capacity Enhancement Function
CEFA : Co-operation for Environmentally Friendly Aviation (ERA, ACI, AEA, AECMA, EBAA, EUROCAE)
CEO : Chief Executive Officers
CEP : Circular Error Probable
CER : Cancel Emergency Mode Request
CES : Central and Eastern European States
CESA : Class E Surface Area
CESAR : Course Evaluation Sheets Analysis and Reporting
CESC : Chief Executive Standing Conference (see CEO)
CEU : Central Executive Unit (ATM / CFMU)
CEU-E : Central executive unit with Responsibility for Eastern Europe
CEU-W : Central executive unit with Responsibility for Western Europe
CEW : Civil Engineering Works
CF : Change frequency to….
CF : Course to a Fix (ARINC 424 Path Terminator)
CFAR : Constant False Alarm Rate (or Regulation)
CFB : Central Flight plan Bank
CFCF : Central Flow Control Facility
CFD : Change to Flight Data Message
CFDS : Central Flight Data Suite (PALLAS system)
CFE : Customer Furnished Equipment
CFEP : Communications Front End Processor
CGL : Circling Guidance Light(s)
CFIT : Controlled Flight into Terrain
CFL : Cleared (Current) Flight Level
CFM : Central Flow Management (services)
CFM : EEC business area - support to ATFM
CFMU : Central Flow Management Unit
CFMUSC : CFMU Steering Committee
CFTPD : Central File of Transponder Performance Data (ECC)
CFR : Code of Federal Regulations
CG : Center of Gravity
CGAS : Class G Airspace
CGS Centimeter-gram-second
CH : Channel
CH : Switzerland (ISO Country Code)
CHA : Character
CHAID : Chi Square Automatic Interaction Detection
CHAN : Channel
Chap. : Chapter
CHG : Change Message
CHG : Change of Modification
CHI : Computer-Human Interface
CHIEF : Project Switzerland (CH), Italy (I), Spain (E), France (F)
CHIRP : Confidential human Factors Incident Reporting Programme
CHMI : CFMU Human Machine Interface
CI : Cirrus
CI : Configuration Item
Cl : Cost Index
CI : China Airlines (airline)
CI : Course to Intercept (ARINC 424 Path Terminator)
CIA : CFMU Internet Application
CIADN : Croatian Integrated Aeronautical Data Network
CIC : Clearances and Information Communications
CICT : Convergence and Implementation Coordination Team (renaming of SICT)
CID : Computer Interface Device
CIDIN : Common ICAO Data Interchange Network
CIEL : Common Interface Exchange Language
CIG(s) : Ceiling(s)
CIM : Customer Information Management
CIMIL : Civil/Military Co-ordination
CINCAT : Capacity Increase through Computer Assistance Tools
CINCENT : Commander in Chief Central Europe
CINTIA : Control of Inbound Trajectories of Individual Aircraft
CIO : Conventional International Origin
CIP : CFMU Implementation Plan
CIP : Convergence and Implementation Programme
CIS : Commonwealth of Independent States (States of former USSR)
CIS : Cooperative Independent Surveillance
CIS : Critical Incident Stress
CISD : Critical Incident Stress Debriefing
CISM : Critical Incident Stress Management (HRT)
CISMO : Centralised International System Management Organisation
CIT : Compressor Inlet Temperature
CIT : Critical Incidence Technique
CIT : Near or over large towns
CITRAC : Common Interface for Trajectory Calculation
CIU : Cabin Interface Unit
CIV : Civil
CJEC : Court of Justice of The European Communities (=CJEC, COJEC now European Court of Justice)
CJI : Controller Justification Indicator
CK : Check
CL : Centre Line
CL : Cleared
CL : Connectionless Mode Service
CLA : Clear type of ice formation
CLA : OCM Clearnace Echoback Message (message in the OCM Service)
CLB Climb Detent of the Thrust Levers
CLBR : Calibration
CLD : Cloud
CLD : DCL Clearance Message (message in the DCL Service)
CLG : Calling
CLIMAX : Multi-station carrier offset mode, with voting override
CLKWS : Clockwise
CLNP : Connection Less Network Protocol
CLNS : Connection Less Network Service
CLR : Clear or cleared to or clearance
CLSD : Closed
CLTP : Connection Less Transport Protocol
CLW : Communications List Window
CLX : OCM Clearance Message
cm : Centimeter
CM : Configuration (Context) Management
CM : Common Memory (CBN - CNG)
CM : Conformance Monitoring
CM : Critical Milestone (MAS/DFS - ODS)
CMA : Central Monitoring Agency (NAT)
CMA : Context Management Application
CMB : Climb
CMB : Combined (PSR and SSR)
CMC Central Maintenance Computer
CMC : Central Master Clock
CMC : Constant Mach Blimb
CMCSG : Civil and Military Co-ordination Sub-Group
CMG : Crisis management Group
CMIC : Civil Military Interface Standing Committee (New Convention)
CMIP : Contract Management and Inspection Procedures
CMIS/CMIP : Common Management Information System / Protocol
CMMC : Central Monitoring and Management Centre
CMMC : Common Maintenance Monitoring and Control
CMOS : Complementary Metal Oxid Semiconductor
CMPL : Completed or Completion or complete
CMS : Central Message Switch
CMS : Common Modular Simulator (CMTP)
CMSA : Carrier Sense Multiple Access (ICAO-ADS)
CMSND : Commisissioned
CMT : Core Management Team
CMT : Critical Milestone Test (MAS/DFS - ODS)
CMTP : Common Medium Term Plan
CMU : Communications Management Unit
CMV : Coverage Measurement Volume
CN : Change Notice
CN : China (ISO Country Code)
CN : Common Network (INTNET/RADNET)
CN : Permanent Commission for the safety of air navigation
CNACC : Common National Area Control Centre
CNATCC : Common National Air Traffic Control Centre (Bulgaria)
CNG : Common Network Group
CNL : Cancel(lation) message (ICAO)
CNS : Communication, Navigation and Surveillance
CNS : Study Group of Alternates
CNS/ATM : Communication, Navigation and Surveillance / Air Traffic Management
CNS/ATM-1 : Communication, Navigation and Surveillance / Air Traffic Management Package 1
CNTRLN : Centerline
CO : Connection Mode Service CO Continetnal
COBALT : Common Objective Alignment Team
COBT : Calculated Off Block Time
COC : Combat Operations Centre or Concept
COCESNA : Central American Corporation For Air Navigation Service
COCOS : Computer Controlled SSR Code Assignment Procedures
COD : Common Medium-Term Plan Overview Document
CODA : Central Office of Delay Analysis
CODE : Aircraft address (expressed in the form of an alphanumerical code of six hexadecimal characters) when required by the appropriate ATS authority
CODEC : Coder/Decorder (ACS)
CoE : Centre of Expertise
COF : Change of Frequency
COFA : Comando Operacional Força Aérea (PT)
COFAR : Common Options for Airport Regions
COFEE : Consolidated (Checked) Operational data FEEder
COG : Coordination Group (meeting of the EANPG Programme) ICAO
COHO : Coherent Oscillator
COLL : Collapse
COLOC : Change of Location of Command
COM : Cockpit Operating Manual
COM : Communications (ICAO)
CoM : EUROCONTROL Committee of Management
COM/DIV : ICAO Communications Divisional Meeting
COM/MET : Communications / Meteorology Divisional Meeting
COM/OPS : Communications / Operations
COMALF-E : Commander of Airlift Forces - Europe
COMED : Combined Map and Electronic Display
COMG : Communications Group
COMIL : Coordination Centre for Military Airspace Use
COMIL-1N : ATS Coordination Centre for Military Airspace Utilisation - Phase 1 Network
COMLAN : COMmunication Local Area Network
Comm-B : Mode S downlink format DF20 or 21
COMNAV : Groupe de travail sur les Télécommunications et les installations de navigation (CEAC)
COMP : Operating Company
COMPAS : Computer Oriented Metering Planning and Advisory System
COMSEC : Communications Security
COMT : Communications Team
COMX : Undefined Future Communication System
CON : Continuous
CONC : Concrete
COND : Condition
CONDAR : Conflict Detection and Resolution
CONDOR : Confidential Direct Occurence Report
CONF : Conflict
CONFACP : Conflict Accept
CONOPS : Concept of Operations of Mode S in Europe
CONP : Connection Oriented Network Protocol
CONS : Continuous
CONST : Construction or Constructed
CONT : Continue
Cont’d : Continued
CONUS : Continental United States
COO : Coordinator
COOR : Co-ordinate or coordination
COORD : Co-ordination
COP : Change over Point
COP : Contingency Operations Plan
COP : Co-ordination Point
COPG : Common Operating Procedures Group
COPP : Connection Oriented Presentation Protocol
COPS : Common Operational Performance Specifications
COR : Correct or Corrected or Correction
COR : Correlate
CORA : Conflict Resolution Assistant
CorC++ : Computer language
CORE : Controlled Requirements Expression
CORE : CORE Requirements for ATM Working Positions
COROM : Cognitive Competencies Model
CO ROUTE Company Route (also CO RTE)
CORUM : Training and Human Resources Consultancy Company
COS : Chief of Staff
COS : Computer Operating Station
COSAAC : Common Simulator to Assess ATMF Concepts
COSP : Connection Oriented Session Protocol
COSPAS : Space system for the search of vessels in distress (translate. from Russian)
COST : (European) Cooperation in the Field of Scientific and Technical Research
COSU : CFMU/ENGD - Core Systems Unit
COSYNUS : AIRBUS Training Database
COT : At the Coast
COTP : Connection Oriented Transport Protocol
COTR Contracting Officer’s Technical Representative
COTS : Commercial Off-The-Shelf (System)
COV : Cover or Covered or Covering
CP : Circular Polarisation
CP : Conflict Probe (PATs)
CP : Contact Person (Eurocontrol)
CP : Control Panel
CP : CWP Processor Unit
CPA : Closest Point of Approach
CPC : Constant Pitch Climb
CPC : Control and Processing Centre
CPCs : Certified Professional Controllers
CPCS : Cabin Pressure Control System
CPD : Continuous Professional Development
CPD : Coupled
CPDLC : Controller Pilot Data Link Communications
CPF : Central Processing Facility
CPI : Californian Psychological Inventory
CPL : Commercial Pilots License
CPL : Current Flight Plan (message)
CPL : Customer Priority Listing (NOG)
CPR : Conflict Prediction and Resolution
CPS : Central Print Service / Central Processing System
CPS : Characters Per Second
CPU : Central Processing Unit
CR : Central Region
CR : Course to a VOR Radial (ARINC 424 Path Terminator)
CR : Czech Republic
CR(A)OC : Central Region (Air) Operations Centre
CRAF : Central Reservation Airspace Facility
CRAF : Civil Reserve Air Fleet
CRAF : Computer Resolution Advisory Function
CRAFS : Civilian Request for Airspace and Flight Data System
CRAM : Conditional Route Availability Message
CRATF : Communications Requirements Analysis Task Force
CRC : Control and Reporting Centre
CRC : Cyclic Redundancy Check
CRCO : Central Route Charges Office
CRD : Conflict Risk Display
CRDA : Converging Runway Display Aid
CRDS : CEATS Research & Development & Simulation Centre
CRDS : Colour Raster Scan Display
CREME : Creating the EATCHIP Management Environment
CRF : Central Repair Facility (RMCDE - MAS)
CRITTER Civil Rotorcraft IFR Terminal-Area Technology Enhancement Research
CRM : Cockpit / Crew Resource Management
CRM : Collision Risk Modelling (ICAO - ADS)
CRM : Co-ordination Revision Message
CRMCS : Central RADNET Monitoring and Control System
CRNA : Centre Régional de la Navigation Aérienne (DGAC/DNA/SCTA, France)
CRS : Contingency Routing System
CRS : Controller Route Sequence (FPPS/DECADE)
CRS : Course
CRT : Choice Reaction Time
CRZ : Cruise
CS : Callsign or Contract Signature
CS : Cirrostratus
CS : Collapsed Sector
CSAC : Cooperative Structural Airspace Concept (ICAO)
CSAR : CFMU System Anomaly Report (FORM)
CSC : Common Signalling Channel
CSCE : Conference on Security and Cooperation in Europe
CSCW : Computer Supported Co-operative Work
CSD : Concept and System Domain
CSD Constant Speed Drive
CSD : Context and Scope Document
CSD : Context Specification Document
CSDT : Concept & Systems Development Team
CSDT : Context and System Domain Team
CSEL : Combat survivor evader locator
CSF : Critical Success Factor (EATMS, CSD)
CSFR : Czech and Slovak Federal Republic
CSI : Combined Safety Investigation
CSI : Critical Success Indicator
CSM : Central Service Modules (RMCDE / RADNET)
CSM : Chaotic Situation Management
CSMA : Carrier Sense Multiple Access
CSMA/CD : Carrier Sense Multiple Access with Collision Detect
CSN : Channel Sequence Numbers
CSO : CFMU/ENGD/SOS - CFMU System Operations HELPDESK Team
CSP : Communication Service Provider
CSPD Unit : CEATS Strategy, Planning and Development Unit
CSPDU : CEATS Strategic Planning & Development Unit
CSR : Cursor
CSR : Customer Service Requests (NOG - database for DPN operators)
CSSR : Conventional SSR
CSU : Control Sector Unit
CSU-P : Centre Supervisor
CT : Centre (select)
CT : Cooperative Tools (PATs)
CT : Core Tasks
CT : Core Team
CTA : Calculate Time of Arrival
CTA : Controlled-Time of Arrival
CTA : Cognitive Task Analysis
CTA : Control Area (ICAO Term)
CTAM : Climb to and maintain
CTAS Center TRACON Automation System
CTB : Co-operative Tube Based
CTC : Cancel All Contracts And Terminate Connection Request (ICAO)
CTC : Centralized Train Central
CTC : Contact
CTD : Calculated time of Departure
CTF : Communication Task Force
CTG : Common Training Group (of AISAP)
CTI : Collegiate Training Initiative
CTL : Control
CTMO : Central Air Traffic Flow Management Organisation (ICAO concept)
CTN : Caution
CTO : Calculated Time Over
CTO : Computed Time Over (CFMU - CASA)
CTOT : Calculated Take Off Time
CTR : Center
CTR : Civil Tilt Rotor
CTR : Controller or Control Zone
CTRL Control
CTRS : Common Time Reference System
CTS : Command Tracking Stations
CTWUEC : Committe of Transport Workers’ Unions in the European Compmunity (now FST : Federation of Transport Workers’ Unions in the European Union = acronym formed from its French title)
CU : Control Unit
CU : Cumulus
CUF : Cumuliform
CUG : Closed User Group
CUP : Computer Utility Program
CUP : CWP-Unit Processor
CUR : Current Sector or Centre or Controller
CUST : Customs
CV : Curriculum Vitae
CVFR : Controlled Visual Flight Rules
CVO : Code Validity Overlap
CVR : Cockpit Voice Recorder
CVR : Console Voice Recorder
CVSM : Conventional Vertical Separation Minimum
CVSRF Crew-Vehicle Simulation Research Facility (NASA Ames)
CW : Clockwise
CW : Continuous Wave
CWAR : Continuous Wave Acquisition Radar
CWBS : Contract/Complete Work Breakdown Structure
CWDPS : Central Weather Data Processing System
CWIR : CFMU Generated What-If Re-routing
CWP : Controller Working Position
CWS : Control Wheel Steering
CWS : Collision Warning System
CWY : Clearway
CX : Cathay Pacific Airways (airline)
CY : Cyprus (ISO Country Code)
CY : Cyprus Airways (airline)
CYPRO : Cyprus Project for ATC Improvements
CYTA : Cyprus Telecommunications Authority
CZ : Czech Republic (ISO Country Code)
CZM : Conventional Zero Meridian
CZW : Conflict Zoom Window (ODID)














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