System Safety Training

As part of our portfolio of services to industry we have developed and are currently successfully running courses in Aircraft System Safety Assessment techniques (based on the US and European regulatory requirements of FAR/CS 25.1309) that have been presented worldwide to airworthiness authorities, operators and manufacturers. We are able to offer complementary courses in theoretical and practical system safety training, including the following topics:

  • System Safety Assessment techniques (based on the US and European regulatory requirements of FAR/CS 25.1309), including Functional Hazard Assessment, Zonal Safety Analysis, Fault Tree Analysis, Enhanced Fault Tree Analysis and Failure Mode and Effect Analysis
  • Reliability and Maintainability techniques
  • Reliability Monitoring

Courses offered

  • Safety Assessment of Aircraft Systems - 5 day course

    The course is aimed at engineers and managers that may be involved directly or indirectly with the System Safety Assessment process, although it is formulated on the assumption that the participants have had no previous formal instruction on safety analysis techniques and processes.

    The objectives of the course are to give participants:

    • An understanding of the methodology and analysis techniques for carrying out System Safety Assessments, including Functional Hazard Assessment, Zonal Safety Analysis, Fault Tree Analysis, Enhanced Fault Tree Analysis and Failure Mode and Effect Analysis
    • Familiarity with the mathematics and statistical distributions involved in the process
    • A knowledge of some of the more common errors encountered in analysing aircraft systems
    • An understanding of the interaction between the safety analysis process and systems architecture, and how the results of the safety analysis affect the maintenance and operation of transport aircraft.

    The course is typically held over five days and constitutes:

    • Lectures with question periods.  Participants are encouraged to ask questions during the lectures to ensure a common understanding
    • Tutorials where participants will be shown how to solve problems and will have the opportunity to work on problems themselves.  A full set of course notes is provided to all participants.

    Click below to see a typical course timetable:

  • Typical 5 day course timetable [Download Adobe Acrobat document]  


"A great balance between theory and practical. Very useful practical exercises to get a good understanding of concepts."

"Ray and Maurice were both excellent and engaging lecturers and their wealth of experience and examples helped bring the course to life."

"One of the best courses I have ever participated on! The instructor had a lot of knowledge on the topic and explained it very clearly. I found it invaluable that we had many practical examples."

If you are interested in this course please contact us at

  • Applied Safety Assessment Training

    Applied System Safety Assessment Training Courses in conjunction with Cranfield University, 1st - 5th July 2019 and 27th - 31st January 2020.

    APPLIED SAFETY ASSESSMENT - offered as a workshop in conjunction with Cranfield University

    R.G.W. Cherry and Associates are pleased to be running APPLIED SAFETY ASSESSMENT workshops, in conjunction with Cranfield University.

    These courses are designed to complement the Cranfield University Safety Assessment of Aircraft Systems Short Course.

    Delegates will carry out safety analyses on a system installed on an aircraft using schematics and the actual aircraft as appropriate. These analyses will form an integral part of the workshop objective of producing a comprehensive System Safety Assessment. Delegates will work in groups to carry out the System Safety Assessment and will use various methods including the following safety analysis techniques:

    • Functional Hazard Assessment: The FHA exercise will identify the critical failure conditions of the system. Each group will classify the failure conditions in accord with the 25.1309 categories and identify the analysis techniques most appropriate to each.
    • Particular Risks: Particular Risks to the system and its installation will also be considered.
    • Enhanced Fault Tree Analysis: The groups will carry out an Enhanced Fault Tree Analysis for the failure conditions identified by the FHA as being appropriate to this analytical technique.
    • Failure Mode and Effects Analysis: This exercise will use detailed system schematics in order to perform an FMEA on the aircraft system.
    • Zonal Safety Analysis: Delegates will carry out a Zonal Safety Analysis on the aircraft zones in which the system is installed.


    "Many thanks to you both. Your presentation style and delivery is an example of how to do it right! And your depth of knowledge was clearly extensive ... excellent in both content and delivery!"

    "Very thorough and intensive course, useful and a great experience."

    Click below to view video from recent Applied System Safety Assessment training course - held in conjunction with Cranfield University. The video is kindly provided by student Steven Teo, Guan Kiat.

    Click here for more details. Alternatively contact us at

  • Course presenters

    • Ray Cherry

      RGW Cherry & Associates Ltd – Aviation Consultants – Photo of Ray Cherry
      Ray Cherry is a Chartered Engineer, a Fellow of the Royal Aeronautical Society and a Member of the Institution of Mechanical Engineers, with over 40 years experience in the aviation industry. Ray, accredited by Cranfield University as a Recognised Teacher, has lectured on their five-day Safety Assessment of Aircraft Systems Course since its inception in the 1970’s.

      He continues to lecture on this course covering a variety of modules and is responsible for tutoring on the Course Exercise. He is one of the lecturers that is responsible for the course content and is also one of the Course Administrators.

      Ray is the co-presenter of the Applied Safety Assessment course also presented at Cranfield. Ray is responsible for the System Safety Assessment Module and conducts all of the lectures and tutorials for Cranfield University’s MSc Course in Human Factors and System Safety Assessment. In addition, as Director of R.G.W. Cherry & Associates Limited, he regularly runs system safety training courses worldwide on aircraft reliability and safety assessment techniques to airworthiness authorities, manufacturers and airlines and is recognised worldwide as an expert in this field.
    • Maurice James

      RGW Cherry & Associates Ltd – Aviation Consultants – Photo of Maurice James
      Maurice James has over 40 years experience in the aviation industry having previously held many senior positions managing teams of project managers and engineers. He specialises in system safety analysis, engine and powerplant design and development, flight test engineering and project management.

      He has a wide understanding of the safety analysis process in the context of aircraft design. He is a lecturer and carries out the tutorials on the Cranfield University Systems Safety Assessment Course.

      He is a holder of a Commercial Pilots Licence with an Instructors Rating and flies regularly. He also lectures on Pilot’s Studies at the University of Hertfordshire. Since joining R.G.W. Cherry & Associates, Maurice has presented many system safety training courses and worked on a wide range of system safety projects and benefit analyses.

      Maurice is a Chartered Engineer, a Member of the Royal Aeronautical Society, and a Member of the Institution of Mechanical Engineers and holds a degree in Mechanical Engineering from the University of Durham.

    Contact us about our courses

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