System Reliability & Resilience

This workstream is focused on enhancing the reliability and resilience of the human/machine system through:

  • Early diagnosis and resolution of potential failure.
    • Optimising the use of Health and Usage Monitoring Systems
    • Working with OEMs to review existing alternate detection methodologies to identify safety enhancing improvements
  • Operating with serviceable and suitable safety equipment
  • Improving equipment reliability, including fewer single point failures, and system(s) redundancy
    • Assessing technical and accident data, to identify causes of events, such as ‘Return to Base’ or technical failures that have contributed to accidents
    • Reducing operational impact of system failures
  • Effective Maintenance
    • Ensuring effective progressive maintenance by reviewing aircraft maintenance documentation and training, and evaluating critical maintenance tasks, to ensure that manuals, tools and training procedures effectively support maintenance teams
    • Error tolerant designs
  • Improved airworthiness management
    • Improving collaboration between operators’ maintenance teams to collect data on best practices and lessons learned for sharing across the industry
  • Effective Supply Chain Management


  • Implementation of Health & Usage Monitoring best practice guidelines to enhance early detection at the frontline.
  • Established work groups to progress specific elements of the workstream.

Click here to open the Workstream Timeline

Click here to read the Health and Usage Monitoring Systems Recommended Practice document

Click here to read the Human Hazard Analysis Standardised Approach for Airframe Designers document

Safety Programme: High Potential Actions

These are the high potential actions identified in the HeliOffshore Safety Strategy for this workstream.

System Reliability_Snip

Workstream Leaders

Lee James

Deputy General Operations Manager/ Snr Manager Maintenance, EMEA, CHC

Rob Pendle

Technical Director, Caverton Helicopters


HUMS Recommended Practice v2.0 Human Hazard Analysis Standardised Approach