Nick
The 225 airframe engine combination does meet the requirements. If it didn't, the TCDS would show it as you well know. Do stop trying to mislead.
I agree that if you fitted a crappy old pair of CT7s it would no longer be compliant, but the TCDS refers to a particular airframe and engine combination, so that point is irrelevant.
I am sure the S92 blades can take
a 23mm HEI hit in the worst angle,
but what happens if the bits are bigger than 23mm?
Another photo on the same slide of yours that I stole (can't be bothered to post it), shows the turbine disc in 3 large chunks which are much, much larger than 23mm. The blades could not take a hit from that.
Mind you, with only 4 blades I suppose there is a moderate chance that the chunk would miss the blades altogether. Perhaps its this luck that you are relying on to keep your occupants alive?
HC