Nr Fairy,
There are lots of repared blades out there, and field repairs under 3 inches long are allowed according to my engineer. I don't have any repairs on my blades now although when I got the helicopter it had just passed a C of A with a large, very obvious trailing edge repair.
That blade has now been scrapped. I have experienced a large delamination in flight. It caused moderate vibration but only when the lever was lowered. Blades are lifed 'on condition'.