Originally Posted by
Embraego
Structural or company-performance mtow? I figure length due to the fact that ar/er/xr versions are usually the same size and the 'rates' can be standardized industry wide.
The company can pay the manufacturer for a piece of paper that changes the MTOW. Don't know how common it is in the US, but aircraft weights vary seasonally in Europe, where some fees are assessed based on MTOW. If we really are going to go by weight, we need to get the max structural weight approved by the manufacturer. The company can then do whatever it wants to the weights.