Originally Posted by
Mitchaa
So HUMS picked this up the night before but during the analysis the graph was ‘stuck’ and the exceedance wasn’t clear (look at the scaling on the right hand side) and the engineer released the helicopter.
If he had resolved the stuck graph and zoomed in on the data as shown in the additional graph, the exceedances were clear to see and the TGB bearing would have been inspected that night.
So the event was totally avoidable and was just sheer luck that the failure happened 6ft above a helideck. Anywhere else and that would have been in the water or in a field.
I can see why it happened, but Jesus, it was clear as day, it should never have left Aberdeen that day. I can imagine the engineer having a hard time trying to explain how he missed that. The importance of Human Factors training I suppose.
Do you even know how HUMS works? talking a hind sight is easy thou'