You may remember the Bell47 Main Rotor grips that were downgraded to 1200 hour life. In Australia we convinced CASA that an eddy current inspection of the threads allowed us to retain the original hour timex.
So it has been done before
Yes, but how many decades ago?
There is no doubt it
could be done again, but it would require a level of unanimity and commitment that, sadly, I think no longer exist in GA in Australia.
