Thanks for the reply pwrltd,
Yes I think the same person at maintenance did fit the starter on both occasions,
I have spoken to a eurocopter engineer who tells me that it is a two man job to refit the starter as its very easy to fracture the spline drive shear point....
There is also a big sticker on the starter saying it must be supported until retaining clamp is fitted.
What I'm trying to find out is could it be anything else, I was wondering does the starter actually swap to start mode momentarily when the starter button is pressed to shut down or is it locked out ?
I can't just keep throwing money at it replacing the starter / shaft without any sort of explanation other than 'ain't seen that happen before '
It does seem too coincidental to have started after brush replacement....
Just wondering if anyone else had come across this ?
It must have happened before or why the big sticker on the casing ?
Nelly