Short Term Conflict Alert (STCA) Guidelines

EUROCONTROL Guidelines for Short Term Conflict Alert - Part I to III - EUROCONTROL-GUID-159 - PUBLISHED

Ground-based safety nets are functionalities within the ATM system with the sole purpose of monitoring the environment of operations in order to provide timely alerts of an increased risk to flight safety.

Short Term Conflict Alert (STCA) is a ground-based safety net that assists the controller in preventing collision between aircraft by generating, in a timely manner, an alert of a potential or actual infringement of separation minima.

These Guidelines - mainly aiming at supporting Air Navigation Service Providers - specify the minimum requirements and provide comprehensive guidance for the definition, implementation, optimisation and operation of Short Term Conflct Alert (STCA).

PART I - describes the STCA concept of operations and specific requirements on STCA

PART II - contains overall guidance for the complete lifecycle of STCA

PART III - specifies a generic example of an STCA implementation and provides detailed guidance for optimisation and testing of STCA


Together with similar Guidelines for Minimum Safe Altitude Warning (MSAW), Approach Path Monitor (APM) and Area Proximity Warning (APW), these documents provide Level 3 documentation for evolutionary improvement of ground-based safety nets.



These Guidelines have been developed following the EUROCONTROL Standards Development Process and have been submitted to a two-staged Informal Stakeholder Consultation before their final approval and publication.