It is our pleasure to announce that the first draft of the “Guidelines for the Rotorcraft Certification by Simulation Process” has been released for public consultation. The guidelines ( present preliminary Guidance for the application of rotorcraft flight modelling and simulation in support of certification for compliance with standards CS-27 and CS-29, PART B (Flight) and other Flight-7 related aspects (e.g. CS-29, Appendix B, Airworthiness Criteria for Helicopter Instrument Flight), and has been developed by the partners of RoCS Project, i.e. Politecnico di Milano, NLR, University of Liverpool, Cranfield University and DLR.


The Guidance is presented in the form of a structured process, starting from the relevant paragraphs in the Certification Specifications, through a comprehensive description of the assembly of flight simulation requirements, informed by judgements on Influence, Predictability and Credibility, and on into the detailed building of the three major elements of the process:

  • the flight simulation model (FSM)
  • the flight simulator (FS), and
  • the flight test measurement system (FTMS)


We would like to invite all interested parties to send us comments on all aspects of this draft. The document contains line numbers to facilitate the indication of comments specific to each paragraph of the document. However, also general comments are welcome. To provide your comments to us please send an email to using as object the text “Comments of the Guidelines for Rotorcraft Certification by Simulation Process”. Comments are expected no later than 10 October 2022. The updated guidelines together with the results of this consultation process will be presented during the workshop on Rotorcraft Certification by Simulation to be held in November 2022 during the forthcoming European Rotors show.  For more information about the workshop please refer to the European Rotors website.


Thanks to the entire RoCS Team and in particular to Gareth Padfield for leading with great rigor the editorial team. Thank also to Stefan van’t Hoff,  Mark White, Linghai Lu, Chris Dadswell, Philipp Pozdus and Giuseppe Quaranta and all the others who contributed with writing, revising, editing, discussing.


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