I think you might be wrong HC. I understand that Ultrasound is required after 8 or 11.5 hours (can't remember exactly) Its the combination of ultrasound and the Mod45 increased monitoring which when combined, gives the probability low enough for the CAA to lift the restrictions.
Since in their briefings to oil and gas industry, EC has admitted that the stresses on the shaft were found to be greater than those calculated during certification, we have less confidence than others in the interim solution. My company has decided not to accept the "fudge" approach. We will wait for the new shafts next year before we're introduce the 225.
It will give our passengers time to see the aircraft in service before we ask them to get back into it which they don't want to do.
Last edited by terminus mos; 11th Jul 2013 at 13:19.