Form41 route costs

There’s no silver bullet in Form41 reports that’s going to let you figure out the costs for a route, whether it’s domestic or international.  

The Form41 -> Equipment -> Expenses report will give you operating costs by equipment type, but you run into issues if the carrier uses more than one equipment type on the route.  Additionally the costs here don’t include any overhead, and they’re not stage-length adjusted, so you need a lot more info to come up with accurate fully-allocated costs.