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Welcome to the Future Flight Standards Hub

The Future Flight Standards Hub is designed to accelerate the development of Future Flight demonstrators and wider industry innovation based on emerging best practice, knowledge sharing, and standards support.

  • BSI Flex 1903 v2:2024-06 community preview

    This is an interactive version 2 of BSI Flex 1903. The aim of the standard is to create a lexicon of standard terms and acronyms used in this sector. Please note, content is still undergoing internal review and there may be minor changes at full publication.

    We welcome your engagement and comments on this version to help inform the development of the standard. We would also welcome general feedback including what terms could be considered for future versions and these can be made through our dedicated feedback page .

ground-based DAA



  • Definition

    means of achieving detect and avoid (DAA) (3.1.55) sub-functions detection, decision, command, and analysis of feedback where all sub-functions are ground based


    NOTE Detection equipment includes, but is not limited to, the use of optical sensors, primary or secondary radar, receivers for the detection of electronic conspicuity (EC) (3.1.66) signals, and mobile networks.

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