By Bjorn Fehrm
When an aircraft gets larger, its operating costs increase, everything else being equal. At the same time, it can take more passengers. This will increase the aircraft’s revenue generating capability, assuming the network can generate the traffic level needed.
To understand the difference in revenue capability for the 7 and 7X we will now develop their Direct Operating Cost (DOC) and compare these with the revenue generation capability of the aircraft. This gives the margin capability and one can establish where the cross over point would be between 737-7 and 7X with respect to margin for the airline.