Strangely: The supplement in the RFM of the 76 I fly is from a Canadian Design Approval Organisation ( DAO ) with Canadian DOT approval stamp and states under Loading Limits that "Auxiliary Fuel tank weight and fuel weight combined shall not exceed 600 lbs"
The fuel loading table however goes all the way to 721 lbs.
I wonder if the 600 lbs max total is only a limit in a Canadian registered a/c or it is also a limit elsewhere? I guess it depends who did the Design approval application and where the approval was granted.
Is the Aux tank a Sikorsky Factory option or an after market part?
Does anyone have a copy of a supp. allowing loading to the 720 lbs max?
I would like to get a copy.