We had our own airline performance figures which were a lot more limiting & restricting than the aircraft flight manual figures produced by Avro. Just ta be safe!
Not sure if Swiss used those produced by Avro, in which case thay could haul a lot more weight out of there. I know we definitely had narrower bands on the weight and balance/COG loadsheet, and also restricted out structural TOW to 41750kg (although this could have been done to save landing fees!)
thats 41750kg on our -300\'s