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EUROCONTROL > RA Downlink > FARADS 

FARADS
Following a number of safety recommendations to address the issue of RA Downlink EUROCONTROL launched in 2003 the FARADS Project (Feasibility of ACAS RA Downlink Study).

FARADS was completed in spring 2007. The findings of the study are now incorporated in the broader framework of EUROCONTROL's Safety Nets activities. As a follow-up to FARADS, monitoring activities have been undertaken to assess the number and severity of ACAS encounters in Europe. Furthermore, interactions between airborne (i.e. ACAS) and ground-based safety nets (i.e. STCA) are being analysed.
  EUROCONTROL Safety Nets

The Study

RA Downlink, an automatic notification to the controller about Resolution Advisories (RAs) generated in the cockpit by ACAS was proposed as a solution. The objective of the FARADS study was to assess the technical and operational feasibility of RA Downlink considering the following issues:
  • Which RA downlink technology is most appropriate (balancing speed and accuracy on the one hand, and costs on the other)?
  • Will RA downlink provide controllers with information about RA more reliably and expeditiously then current voice reports?
  • Will RA downlink deliver operational benefits, among others, a decreased likelihood of contradictory clearances and a better planning of the post-alert situation?
FARADS found that RA Downlink is technically feasible and may deliver safety benefits. However, these benefits could not be quantified due to insufficient data.

The results of the Study were discussed with Stakeholders during 31st May 2006 workshop and now included in the FARADS Close-out Report.
  Workshop information

Project Phases

The objective of the Feasibility of ACAS RA Downlink Study (FARADS) was to assess the technical and operational feasibly, as well as safety aspects, of displaying ACAS RA information on Controller's Working Positions (CWP).

PHASE 1: Identification of Options & Concepts

  • Non-interactive RA Downlink Experiment (RADE-1).
  • Operational Concept Development.
  • Technical Concept Study.

PHASE 2: Focuses Studies

  • Real-time RA Downlink Experiment (RADE-2) RA Downlink.
  • Latency Study.
  • Safety and Human Factors Evaluation.

Documents


FARADS - Close-out Report

This Report presents the background and the results of the Feasibility of ACAS RA Downlink Study (FARADS).

Following a summary of the findings, a way forward is outlined.
Acrobat EN  -  229 KB
Released Issue: 14/05/2007 Edition: 1.0
ALDA Reference:  07/05/31-25
Further FARADS documentation can be found on the Library page.
  Library
 
  Last validation: 25/08/2010