By far the biggest cause of accidents in the rotary industry is CFIT/CFIT(W), but I don’t see some of the most vocal on this thread demanding of all OEM’s that each and every platform operating in the Public Transport category be fitted with an EGPWS/TAWS/AVAD type system (irrespective of their age and with immediate effect), the installation of which would save far more lives than a true 30-minute Run-Dry compliant transmission would, would it not?
True that CFIT/W is probably a major cause of accidents, but where is the evidence that EGPWS/AVAD prevents it? Just because you fit a shiny blue box and read the hyped sales literature doesn't mean its actually any safer.
CFIT/W is probably far better "fixed" by good crew training, SOPs and top notch flight automation. AVAD is quite good in terms of cost/benefit if its used properly, but by no means a panacea (GBLUN). EGPWS has so many false warnings that all most pilots want to do is switch it off, and it doesn't actually stop you falling into the sea (GREDU). You can't buy flight safety with a $10k box!
But I do agree that 30 mins dry run time is not the be-all either. What is unacceptable is a manufacturer who trumpets compliance with it, when they know the reality is the opposite.
HC