1. Objective ATC 02.2 ESSIP Plan 2013 Ingrid FEIJT DSS/EIPR 13.09.2013

2. ESSIP Plan 2013 / Objective ATC 02.22 Comprehensive Explanation (1/2)  Implementation of ground-based Short Term Conflict Alert (STCA) safety net  ECAC – wide applicable  Requires implementation by all ATC units that provide surveillance (= radar) services to General Air Traffic (GAT) within En-route airspace, in the Terminal Area (TMA) and or Control Zone (CTR).  Military applicability: The Objective is applicable to military ANSPs that provide radar service to GAT traffic (Note: currently there are 8 MIL ANSPs across the ECAC region).

3. Comprehensive Explanation (2/2)  STCA checks the extrapolated track positions based on radar data (current track position) and performs a linear extrapolation using the detected ground speed and predicts or establishes an actual conflict between a/c.  A conflict is declared if a/c tracks are separated less than the minimum separation thresholds.  Some Flight Plan (FP) data like Cleared Flight Level (CFL) can be used to suppress false alarms.  STCA requires appropriate presentation of predicted/actual conflicts to the tactical controllers and ATC supervisor. ESSIP Plan 2013 / Objective ATC 02.23

4. Link to European ATM Master Plan  [CM-0801] – Ground Based Safety Nets (TMA, En Route) ESSIP Plan 2013 / Objective ATC 02.24

5. Most important SLoA(s)  ASP01 “Implement STCA systems and associated procedures in line with EUROCONTROL Specification and related guidance material in En-Route airspace, applicable TMAs and Military ATC units providing radar services.”  ASP03 “Develop safety assessment for the changes, notably ATC systems and procedures that will implement STCA – level 2 functionality and associated procedures.” together with:  REG01 “Conduct safety oversight of changes. Verify that a safety assessment is conducted and review the safety assessment report before acceptance.” ESSIP Plan 2013 / Objective ATC 02.2 5

6. Finalisation Criteria & Closed Questions  REG01 – The introduction of the change into service was accepted and a notification of acceptance has been provided to the ANSP.  ASP01 – STCA function is implemented, documented and in operational use.  ASP03 – The Safety Assessment report including safety arguments for the changes has been delivered to the NSA and a notification of acceptance was received.  STCA implemented at ACC level?  STCA implemented in all TMAs / Towers within CTRs that provide radar services?  STCA parameters tuned to the operational environment (traffic, suppression of alarm in pre-defined areas, look-ahead time, warning time)?  Safety assessment done and accepted by NSA?  Notification of acceptance received from NSA? ESSIP Plan 2013 / Objective ATC 02.26

7. Supporting Material  EUROCONTROL Specification for Short Term Conflict Alert, updated Edition 1.1, dated May 2009  EC-Regulation (EU) No 1034/2011 of 17 October 2011 on safety oversight in air traffic management and air navigation services and amending Regulation (SU) No 691/2010  EC-Regulation (EU) No 1035/2011 of 17 October 2011 laying down common requirements for the provision of air navigation services and amending Regulations (EC) No 481/2008 and (EU) No 691/2010.  Relevant ESARR documents  Safety assessment methods ESSIP Plan 2013 / Objective ATC 02.27

8. ESSIP Report 2012  18 States reported LATE.  Implementation delays / not achieved due to:  implementation of a new ATC System  Implementation and/or validation/verification of STCA before putting into operation delayed  Implementation of STCA in TMA area delayed  Need to implement STCA to avoid impact on safety and achievement of expected safety benefits ESSIP Plan 2013 / Objective ATC 02.28

9. Contacts  Objective Coordinator: FEIJT, Ingrid +32 2 729 5044 ingrid.feijt@eurocontrol.int  DNM Objective Expert(s): BAKKER, Ben +32 2 729 3149 ben.bakker@eurocontrol.int DROZDOWSKI, Stanislaw +32 2 729 3760 Stanislaw.DROZDOWSKI@eurocontrol.int ESSIP Plan 2013 / Objective ATC 02.29