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EUROPEAN ORGANISATION FOR THE SAFETY OF AIR NAVIGATION EUROCONTROL EUROCONTROL EXPERIMENTAL CENTRE A COMPLEXITY STUDY OF THE MAASTRICHT UPPER AIRSPACE CENTRE EEC Report No. 403 Project COCA Issued: February 2006 The information contained in this document is the property of the EUROCONTROL Agency and no part should be reproduced in any form without the Agency’s permission. The views expressed herein do not necessarily reflect the official views or policy of the Agency. REPORT DOCUMENTATION PAGE Reference: Security Classification: EEC Report No. 403 Unclassified Originator: Originator (Corporate Author) Name/Location: EEC – NCD EUROCONTROL Experimental Centre Centre de Bois des Bordes Network Capacity & Demand B.P.15 F - 91222 Brétigny-sur-Orge Cedex FRANCE Telephone: +33 (0)1 69 88 75 00 Sponsor: Sponsor (Contract Authority) Name/Location: EATM EUROCONTROL Agency 96, Rue de la Fusée B - 1130 Brussels BELGIUM Telephone: +32 (0)2 729 90 11 WEB Site: www.eurocontrol.int TITLE: A COMPLEXITY STUDY OF THE MAASTRICHT UPPER AIRSPACE CENTRE Authors Date Pages Figures Tables Annexes References Geraldine M Flynn 02/2006 xii + 91 49 19 7 7 Claire Leleu (Isa Software) Brian Hilburn (Stasys) EEC Contact Project Task No. Sponsor Period COCA 2004 - 2005 Distribution Statement: (a) Controlled by: Head of NCD (b) Special Limitations: None Descriptors (keywords): Complexity indicators, Complexity factors, Sectors classification, Sector I/D cards, Maastricht UAC, Capacity indicators, Workload evaluation. Abstract: This report describes a complexity study performed on all the Maastricht UAC sectors. Particular focus was put on the Brussels sectors in the vicinity of the REMBA navaid to assess if airspace changes made in May 2004 resulted in a reduction of complexity. The study was conducted over two separate weeks; one in April 2004 and the other in August 2004. The sectors were classified into three groups sharing similar complexity characteristics. The results are presented in I/D cards for each sector; these contain the quantitative values of the selected complexity indicators. The results of this study may be used to support safety management processes in MUAC to reduce complexity and increase safety and to support the MANTAS project. A Complexity Study of the Maastricht Upper Airspace Centre EUROCONTROL ACKNOWLEDGEMENTS The COCA project leader would like to thank the ATC experts of the Maastricht UAC for their assistance and cooperation during the surveys. The COCA team highly appreciated their warm welcome and their complete co-operation during the two data collection sessions (in April and August 2004). We would also like to thank those who participated in focus group and paired-comparison sessions, as well as Stewart Mac Millan, Tina Braspennincx, James Kench. Special thanks should go to Keith CARTMALE, Joachim BECKERS, Urs SCHOEKE and Rainer GRIMMER. Project COCA - Report No. 403 v EUROCONTROL A Complexity Study of the Maastricht Upper Airspace Centre Page intentionally left blank vi Project COCA - EEC Report No. 403 A Complexity Study of the Maastricht Upper Airspace Centre EUROCONTROL TABLE OF CONTENTS LIST OF ANNEXES......................................................................................................... VIII LIST OF FIGURES .......................................................................................................... VIII LIST OF TABLES.............................................................................................................. IX DEFINITIONS, ABBREVIATIONS AND ACRONYMS....................................................... X REFERENCES .................................................................................................................. XI 1. INTRODUCTION...........................................................................................................1 1.1. STRUCTURE OF THE DOCUMENT ............................................................................. 1 2. BACKGROUND OF THE COCA PROJECT.................................................................2 2.1. THE COCA PROJECT ................................................................................................... 2 3. MUAC COMPLEXITY STUDY OBJECTIVES...............................................................3 3.1. GLOBAL DESCRIPTION OF THE METHOD................................................................. 3 4. OVERVIEW OF MUAC AIRSPACE AND SECTORS...................................................5 4.1. DIRECTIONAL FLOWS.................................................................................................. 7 4.2. VERTICAL MOVEMENTS.............................................................................................. 7 4.3. OVERVIEW OF THE SECTOR GROUPS ................................................................... 10 4.3.1. Brussels Sector Group ....................................................................................10 4.3.2. DECO Sector Group........................................................................................12 4.3.3. Hannover Sector Group...................................................................................13 5. DATA USED IN STUDY..............................................................................................14 5.1. ELEMENTARY DATA .................................................................................................. 14 5.2. CONFIGURATION DATA............................................................................................. 14 5.3. DATA VALIDATION ..................................................................................................... 14 5.3.1. Elementary Data Validation .............................................................................14 5.3.2. Traffic Distribution Periods ..............................................................................16 5.3.3. Configuration Data – Military Impact ...............................................................18 5.4. DYNAMIC DATA .......................................................................................................... 20 5.4.1. Reported Workload Data .................................................................................20 5.4.2. Self-reported Complexity Factors ....................................................................21 6. CONTROLLER WORKLOAD CALCULATION ..........................................................22 7. COMPLEXITY CLUSTERS.........................................................................................23 7.1. COMPLEXITY CLUSTER 1: APPEAR TO BE HIGH COMPLEXITY SECTORS......... 23 7.2. COMPLEXITY CLUSTER 2: APPEAR TO BE MEDIUM COMPLEXITY SECTORS ... 26 7.3. COMPLEXITY CLUSTER 3: APPEAR TO BE LOW COMPLEXITY SECTORS ......... 27 8. RESULTS....................................................................................................................30 8.1. SECTOR I/D CARD EXAMPLE.................................................................................... 30 Project COCA - Report No. 403 vii EUROCONTROL A Complexity Study of the Maastricht Upper Airspace Centre 8.2. SELECTED I/D CARD RESULTS ................................................................................ 33 8.3. COMPARISON OF I/D CARD RESULTS BEFORE AND AFTER THE BRUSSELS SECTOR CHANGE ...................................................................................................... 37 8.4. HOTSPOT MAPS......................................................................................................... 41 8.5. WORKLOAD RESULTS............................................................................................... 43 8.6. DYNAMIC RESULTS – REPORTED WORKLOAD RESULTS.................................... 44 8.6.1. Phase 1 ...........................................................................................................44 8.6.2. Phase 2 ...........................................................................................................46 8.7. COMPLEXITY FACTORS ASSOCIATED WITH HIGH WORKLOAD.......................... 51 8.7.1. Complexity Factors, by Sector Group..............................................................52 8.7.2. Complexity Factors, by Weekly Period............................................................53 8.8. COMPLEXITY PRECURSORS: FOCUS GROUP RESULTS...................................... 54 9. GENERAL SUMMARY AND CONCLUSIONS ...........................................................56 FRENCH TRANSLATION (TRADUCTION EN LANGUE FRANÇAISE............................57 LIST OF ANNEXES ANNEX A - Centre configurations ................................................................................................... 65 ANNEX B - Civil and Military configuration sheets .......................................................................... 72 ANNEX C - Reported Workload Questionnaires ............................................................................. 75 ANNEX D - Macroscopic Workload Models..................................................................................... 77 ANNEX E - Classification Process .................................................................................................. 79 ANNEX F - Complexity Indicators ................................................................................................... 83 ANNEX G - Complexity Factor List.................................................................................................. 91 LIST OF FIGURES Figure 1: The three Maastricht