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Welcome to EUROCONTROL Safety Nets website |
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This website will provide you with latest information regarding EUROCONTROL Safety Nets activities. The mission is ensuring the effectiveness of safety nets for Air Traffic Control (ATC), including all ground-based safety nets (used by controllers) and those aspects of airborne safety nets (used by pilots) that impact ATC.
The "Safety Nets – Ensuring Effectiveness Guide" explains how to go about implementing and enhancing safety nets. An electronic copy of this document can be accessed by following the link on the right.
If you care to read further, you will gain a better idea of why do we need safety nets and what is EUROCONTROL in particular, doing to enhance and standardise the use of ground based safety nets. |
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13 Dec 2011
Research paper available
Research into experiences of implementing MSAW was undertaken in 2010 by Simone Rozzi as part of a doctorial research programme sponsored by the EUROCONTROL Experimental Centre. A full paper on this study is available for download.
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29 Sep 2011
NetAlert newsletter
Issue 12 of NetAlert, a four-monthly news update, is published. Download an electronic copy here:
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09 May 2011
SESAR update
Find out how safety nets are addressed in SESAR.
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Sometimes, the safest systems fail. That is why safety nets are needed: to provide additional System Safety Defences. Safety nets are ground-based or airborne system functions that alert controllers or pilots to an increased risk to flight safety.
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Ground-based safety nets comprise alerting logic that works primarily on the basis of surveillance data. They function in the short term, using prediction and warning times up to 2 minutes.
The effectiveness of ground-based safety nets is ensured through standardisation. The following ground-based safety nets are concerned:
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Short Term Conflict Alert (STCA)
To assist the controller in preventing collision between aircraft by generating, in a timely manner, an alert of a potential or actual infringement of separation minima |
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Area Proximity Warning (APW)
To warn the controller of unauthorised penetration into an airspace volume by generating, in a timely manner, an alert of a potential or actual infringement of the required spacing to that airspace volume |
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Minimum Safe Altitude Warning (MSAW)
To warn the controller about increased risk of controlled flight into terrain accidents by generating, in a timely manner, an alert of aircraft proximity to terrain or obstacles |
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Approach Path Monitor (APM)
To warn the controller about increased risk of controlled flight into terrain accidents by generating, in a timely manner, an alert of aircraft proximity to terrain or obstacles during final approach |
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Europe-wide standardisation should be achieved by the end of 2008 for STCA and by the end of 2013 for APW, MSAW and APM.
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In order to be effective, each safety set is as independent as possible. However, airborne safety nets may cause deviations from ATC clearances.
The implications regarding Airborne Collision Avoidance System (ACAS) Resolution Advisories are addressed by:
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studying the feasibility of downlinking ACAS Resolution Advisories to ATC, and |
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developing a consistent overall concept for airborne and ground-based safety nets |
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Learn from lessons learnt |
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Click the image to hear what SPIN members have to say |
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Safety Nets Awareness Programme |
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Click the image to access the new Safety Nets Awareness Programme online presentation |
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Ensuring Effectiveness Guide |
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Click the image to access the "Safety Nets – Ensuring Effectiveness Guide" |
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For a printed copy of the document, including the CD, contact the e-mail address at the bottom of this page. |
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Specifications and Guidance Materials |
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Concepts under investigation |
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ACAS RA downlink |
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