Nigerian Expat Outlaw,
I guess I wasn't clear enough. The third engine costs so much in lost range, and gains so little in safety (arguably zero) that it is totally rejected by all commercial opeators. The newest commercial jets are all 2 engined for that reason as well.
SASless, the OEI capability of the S-92 allows about 330 NM from a rig at zero wind on an ISA+10 degree day with full pax and baggage, which is great. If we loaded it to enroute OEI, the aircraft would have about 1000 lbs more payload. That is the price paid for the full OEI. The military H-92 has the same systems, and loads up at 2100 lbs more payload. That 1/2 to 1 ton loss is the "cost" of full Cat A.
That being said, our job at any manufacturer is not to argue with the customer, it is to deliver what he wants. Since full Cat A is so popular 9and was required a few years ago) we designed it in. But we made the EGPWS standard just for real safety.