Pitts
Increased HUMS downloads as Colibri says, not much else can be done. The 3 hour downloads should be sufficient to show the beginnings of propagation if past experience is anything to go by.
Now that it is grounded, what action can be taken to rescind the grounding?
New shaft? Design, test, manufacture and install; 1 year?
If it is 1 year, there are not enough spare 332Ls with functioning MGBs or S-92s around to make up the deficit. The oil companies will be looking for a way to not continue to pay the operators, who won't be making enough revenue to pay the banks. How long before some jobs may have to go?