Thank you for the quick turnaround but unfortunately the way this is written is misleading and will most likely not satisfy the DCA. The MTOW of the SK92 does not vary between 12t and 13t.
What the DCA want to hear is that it is safe to operate an SK92 to these installations and the tonnage certification of the structure. Therefore I propose the following language or something of this nature.
“The T-18 Helideck is designed and certified to a maximum weight of 13t. The Sikorsky S92 helicopter has a maximum gross weight of 12.02t”