Originally Posted by
Dave Therhino
The military utilization is not necessarily limited by the FAA approval, though, so it's possible a military service somewhere has a combi configuration. However, in general these days the US military is having the FAA approve all basic configurations of airplanes that are also civil products, so I doubt the US military is using a combi configuration.
The Navy (which operates 17 out of the 22 -700Cs built) seems to think they can be configured as combis:
The C-40A is certified to operate in three configurations: an all-passenger configuration that can carry 121 passengers, an all-cargo configuration of eight cargo pallets, or a combination of three cargo pallets and 70 passengers.
https://www.navy.mil/navydata/fact_d...0&tid=600&ct=1