Originally Posted by
Varsity
If I remember right, all the 145's had the same takeoff weight.
A 145 driver could probably confirm/deny this.
They used to have a different landing weight. EGL slowly modified all of them to the Heavy Weight Mod (what we have now).
There are also 3 different versions: 135, 140, 145.
Having different planes modified for different missions is not an insurmountable problem. It reduces flexibility and thus (slightly) increases cost. ENY wouldn’t be the first or the last airline to do it.