Research & Innovation - Participant Portal

TOPIC : Enhanced Air and Ground Safety Nets

Topic identifier: SESAR.IR-VLD.Wave1-15-2015
Publication date: 22 October 2015

Types of action: SESAR-RIA Research and Innovation action
Opening date:
29 October 2015
Deadline: 20 April 2016 17:00:00

Time Zone : (Brussels time)
  Horizon 2020
Topic Updates
  • 06 April 2016 18:17

    When reference is made to “candidate members” in this call, this shall be understood as meaning “Members”.

  • 17 March 2016 12:20

    Please note that as a result of the accession of new members to the SESAR Joint undertaking, the list of eligible entities that can submit a proposal in response to the present call, restricted to the SJU Members, has been amended. Therefore the “Excel file (and its Guidance) of Technical Proposal Template for IRs” is not valid any longer and have been removed.

  • 16 March 2016 16:25

    Please note that the call deadline has been extended to 20/04/2016.

Topic Description
Specific Challenge:

When SESAR trajectory-based operations and new separation modes are introduced existing ground safety nets should be effective and provide alerts of actual or potential hazardous situations. Current Airborne Collision Avoidance System (ACAS) performance requirements are based on present modes of separation and will need to be adapted for the future operations identified by the SESAR Concept. The adaptation of ACAS to new separation modes and to new categories of airspace users has to be studied. There is a need to anticipate the required evolution of ACAS for the future operations in Europe and take into consideration potential adaptations. The current strategy is to contribute to ACAS X development and standardisation. ACAS X is a set of FAA collision avoidance systems currently under development: ACAS Xa for normal operations of Commercial Air Transport (CAT), ACAS Xo for specific operations of CAT, ACAS Xu for RPAS operations and ACAS Xp for GA/RC operations. A priority issue is the analysis of the ACAS X systems operational and pilot acceptability.

Currently alerts that occur in the air and on the ground in close time proximity can lead to overlapping decisions by pilots and ATCOs (e.g. reactions to close Short Term Conflict Alert (STCA) alerts and Airborne Collision-Avoidance System (ACAS) resolution advisories). Indeed, existing Ground Safety Nets have been developed independently from airborne Safety Nets (in particular ground-based SNETs have been implemented in a local context while ACAS has been implemented globally) and therefore the operations resulting from their alerts are not always compatible.

Overall, there is a need to adapt the safety nets to the changing environments in order to avoid:

  • lack of capacity to timely identify hazardous situations which will increase with the traffic;

  • Insufficient consideration of the new traffic patterns and of operations with reduced spacing, which could result in undesired alerts.

It is required to address the integration of: GA/ Rotorcraft and Civil Remotely Piloted Aircraft Systems (RPAS).


The Project “Enhanced Air and Ground Safety Nets” aims at delivering the following SESAR Solutions:

  • Enhanced ground-based safety nets adapted to future operations: Adapt ground-based safety nets to future trajectory management and new separation modes through the use of new surveillance means and wide information sharing ensuring the role of last ATC safety layer against the risk of collision and other hazards, while minimising negative operational interactions between ACAS and STCA.

  • Enhanced Airborne Collision Avoidance for Commercial Air Transport normal operations- ACAS Xa: Improve current Airborne Collision Avoidance for Commercial Air Traffic by taking benefit of optimized resolution advisories and of additional surveillance data, without changing the cockpit interface.

  • Airborne Collision Avoidance for Remotely Piloted Aircraft Systems – ACAS Xu: Provide Airborne Collision Avoidance to RPAS taking benefit of optimised resolution advisories and of additional surveillance data, but taking into account the operational specificities of the RPAS. The additional surveillance sources could be ADS-B but also any other sensor installed on the RPAS.

  • ACAS for Commercial Air Transport specific operations– ACAS Xo: Improve Airborne Collision Avoidance taking benefit of optimised resolution advisories and of additional surveillance data while avoiding unnecessary triggering of RAs in new separation modes, in particular if lower separation minima are considered. (new separation modes include ASAS applications but may include other solutions).

  • Airborne Collision Avoidance for General Aviation and Rotorcraft – ACAS Xp: Provide Airborne Collision Avoidance to GA/RC, taking into account the limited capability of GA to carry equipment and its operational specificities.

Expected Impact:
  • The main goal is to increase safety, reducing the number of ATM related accidents and incidents.

  • The project will provide inputs and influence the work on Ground / Airborne Safety Nets at global and regional standardisation level, within ICAO (in coordination with FAA for ACAS), EUROCAE and RTCA.

Topic conditions and documents

The SJU is launching a Call for Proposals under H2020 restricted to its candidate members (c.f.: eligibility conditions below) with a view to implement “SESAR 2020 Transversal Activities”, “Industrial Research& Validation Activities” and “Very Large Scale Demonstration Activities”

Please read carefully all provisions below before the preparation of your application. The key reference documents for this Call for Proposal are the amended SJU Work Programme 2015 and SESAR 2020 Multi-Annual Work Programme. They set out the purpose and scope of the IR/VLD Call for Proposals and describe the activities that will be implemented via the resulting Grant Agreements as well as the conditions for participation and award.

The purpose of this procedure is to award a maximum of 28 (twenty eight) Grant Agreements (GAs), one per “Topic”. This is the relevant model agreement: SJU Model Grant Agreement (MGA). General guidance can be found in the Annotated Model Grant Agreement (AMGA). Please refer also to the SJU MGA Budget Amendment Process.

  1. List of countries and applicable rules for funding: Described in the amended SJU Work Programme 2015.
  2. Eligibility and admissibility conditions: This Call for Proposals is restricted to the Eligible Entities as identified in the amended SJU Work Programme 2015, subject to their selection as SJU Members as a result of the ad-hoc Call for final SJU Membership Applications.The admissibility conditions are described in the amended SJU Work Programme 2015.
  3. Proposal page limits and layout: Please refer to Part B of the SJU proposal template for the IR projects which can be downloaded after entering the submission tool below.
  4. Evaluation

    4.1  Evaluation criteria and procedure, scoring and threshold: Described in the amended SJU Work Programme 2015.

    4.2 Submission and evaluation process: Described in the Guide to the submission and evaluation process
  5. Indicative timetable for evaluation and grant agreement:

    Information on the outcome of single-stage evaluation is provided maximum 5 months from the deadline for submission.
    Signature of grant agreements: maximum 8 months from the deadline for submission, and maximum 3 months from the date of informing successful applicants.
  6. Provisions, proposal templates and evaluation forms for the type(s) of action(s) under this topic:

    The provisions, templates and evaluation forms for the Industrial Research projects (Research and Innovation Actions) are provided next:                                       
    - Specific provisions and funding rates are described in the amended SJU Work Programme 2015
    - SJU proposal templates (Administrative forms and Technical annex) are available after entering the "start submission" button and then after entering the "Download Part B Templates" button
    - SJU Self-Evaluation Form for IR projects
  7. Technical documentation

        - The SJU Work Programme is defined in the SESAR 2020 Multi-Annual Work Programme document.
        - For the Industrial Research projects, the Technical Specifications for each Topic can be found in Appendix C of the SESAR 2020 Multiannual Work Programme
        - The Extended Release Strategy indicating the prioritized SESAR Solutions and the major Programme milestones for Wave 1 and Wave 2. 
        - An overview of the applicable Programme Management processes is provided in the Introduction to SESAR 2020 Programme Execution document
        - Proposed European ATM Master Plan edition 2015

Additional documents

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(EN only, incl. the additional docs.)

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