WAH,
We saw a presentation by Brian Larder of the results from the (then Smith's - but now GE) system at the CAA Helicopter Research Management Committee in May 2007 - following the six-month trial by Smiths and Bristow. Following that I cannot recollect seeing anything except a mention in the CAA Research Report:
Publish the final report on the development and demonstration of enhanced Health & Usage Monitoring System (HUMS) Vibration Health Monitoring (VHM) data analysis
The initial six-month in-service trial of the enhanced HUMS VHM data analysis with a major UK offshore operator concluded in November 2006. The trial was successful and highlighted a number of defects which the current analysis system did not identify, including instrumentation defects. Further enhancements to the system are being progressed and sponsored jointly by the FAA, CAA and UK industry. A further six month in-service trial, scheduled to complete by June 2008, will be undertaken once the key sections of this work have been completed.
Publication of the report has been deferred in order to incorporate the results of additional work identified and the six month trial extension.
Jim