crab,
No sidetrack this is the fun stuff!
The payload range curve is maxed at the top by the gross weight of the aircraft, so at the top, the fuel is not at max, it is exactly the fuel needed to do the stated raduis mission, increasing toward the right corner until max fuel is reached, and then the "southeast" slope where max fuel takes you farther as the average mission weight of the machine is less.
That curve is for the S-92 with MGW at 26,150 pounds (note in the right corner the TO weight of 25,961). The H-92 has 28,300 MGW, so it gains 2150 pounds of fuel (and over 200 NM range).
S/H-92 is to be certified to FAR/JAR so it will match all of the requirements (BCAR now accepts JAR), additionally the transmissions, rotors and such are designed to US Army ballistic and other requirements since the components will go on the next model Black Hawk.
S/H-92 is being certified to FAR/JAR 29 amendment 44 (I checked and the certification basis for S/H-92 is amendment 45), which is current now (two administrative paragraphs were changed subsequently to remove old paragraphs, the design standards were not affected). We designed to future FAR to try and capture all the benefits, even though serious design started in 1995.I checked and the certification basis for S/H-92 is amendment 45