The MK970 is a 5,000-gallon fuel dispensing semitrailer designed for under/over wing refueling of aircraft. It is equipped with a filter/separator, recirculation system and two refueling systems, one for under wing and one for over wing servicing. The tanker is designed to be towed by a 5 ton, 6x6 truck tractor or similar vehicle equipped with a fifth wheel. The MK970 can be loaded through the bottom or through the top fill openings A ladder is provided at the rear of the semitrailer for access to the top manhole and a 3-cylinder diesel engine and pump assembly provides self-load/unload capability. The body of the refueler is a 5,000-gallon, single compartment, stainless steel tank. The chassis is of welded steel construction and is equipped with full floating tandem axles and a manually operated landing gear. The prime mover for the MK970 is the AMK31 series MTVR tractor with or without armor. The M931 seriers 5 ton tractor may be used at a reduced 3000 gallon capacity. The MK970 is replacing the original M970s and the ARCs.