Upgraded S-76
I don’t believe that Sikorsky marketing would intentionally publish this chart. These numbers would make it difficult for an operator to justify the increased cost for the newer D. However, the numbers appear to be correct when comparing the information provided in Sikorsky’s marketing brochures for each model. Hover and OEI service ceilings appear to be the only significant performance advantages of the D over the C++. Other improvements are kind of icing on the cake, most of which are standard on the competitor’s newer machines. After all it is still just an upgraded S-76.