KLB
Well-Known Member
Max payload as a freighter is 6,000 lbs with a range of 400 nm. Wikipedia says a Do-228 can go 215 nm with a 4320 lb payload (and that General Atomics bought the program in 2020!).
One way of estimating weights that aircraft this size are doing well to have the max payload be 35-40% the max gross, so somewhere around 16,000 lbs MTOW.
Or scale-up from the Do-228, which has 70% the power of a C408. Do-228 MTOW is 14,495, so 20,707 lbs. That's above the 19,000 lb limit and the SkyCourier has a longer range at max. payload.
This thing seems to have specs real-close to a 1900D.
View attachment 60228
Its close, payload wise, though realistically both should bulk out before weighing out. Where the 408 i think will suffer is in speed/range for normal operations. It will have a harder time avoiding the weather, without large deviations, which in turn will require more fuel and so on/so fourth. My beloved, ugly 1900D i think should still hold the crown.
Then again I'm bias against anything thats a fixed gear multi….
It will definitely bulk out well before 6,000lbs of boxes. It would likely weight out in zones to get up to that type weight. I recall having a max weight per square foot in the metro and Brazilia.