The cabin floor had tracks to allow interior fitments to be changed quickly to suit different missions; the aircraft could be used for medical evacuation, with room for 12 stretchers and two attendants, and McDonnell also promoted it as a trainer for bombardiers, flight navigators, radar operators, or electronic countermeasure technicians.
The cabin floor had slots for rapid installation of interior components suited to various missions; the aircraft could be used for medical transport, accommodating 12 stretchers and two caregivers, and McDonnell also promoted it as a training platform for bombardiers, flight navigators, radar operators, or electronic countermeasure specialists.