My engineer is interpreting this as meaning that engines in aircraft used for what was called 'public cat' under CAA will have to comply with manufacturers recommendations, which are 10yrs plus 20% extension for Lycomings and 12 yrs apparently for Continental. I wonder how many operators in the US comply with these 'recommendations'?
If the aircraft is used 'privately' then it can go on condition as before, but I am not sure of the implications of the 100Hr 'engine check' referred to above. Will EASA allow 100Hr airframe checks as well, in line with their 'manufacterers recommendation' policy?
Of course the law of unintended consequences may apply here because in reality most 'public cat' engines would reach 2000 hrs long before 10yrs, so no problem. The difficulty is with aircraft that have changed use or the case where occasional public cat operations are convenient to otherwise private owners.