Shy Torque - The disagreement on dates is understandable. I was referring to the official Type Certificate data sheet which lists the date of the regulations that the aircraft was tested and approved under.
For Puma, it is 1971 to 1974, depending on the model, for Super Puma MKII it was 1978.
Rigid_Rotor - The date of the Type certificate approval basis for the EH-101 is 1990, the S-92 was desgned in the late 1990's, but it was designed to meet the future rules (which were draft at the time) so that FAR/JAR 29-45 year 2000 is its basis.
elpirata - The S-1 was Igor's first machine, and so on up the line, except that we changed the S-74 to the S-76 when we launched it back in 1976. The S-70 is the H-60 and the S-80 is the H-53E (the S-64 is the H-53A/D), the Comanche has no S number. Many S numbers were devoted to proposals that did not get launched, or were limited production (the RSRA was the S-72, the ABC was the S-69)