The compatibility of antimisting kerosene (AMK) with a contemporary fuel system was evaluated, AMK made with the FM-9 additive to the base fuel was used throughout the program. Tests were conducted to determine the effects AMK had on the components and system performance, and the effects components and the system had on the fuel. Some DC-10/KC-10 systems are incompatible with the AMK fuel. Systems and/or procedural revisions to accommodate the AMK do not appear to present technically insurmountable problems. AMK reduces the performance of some systems below normally accepted levels. Additional studies and testing would be required to certify the aircraft fuel system for use with the FM-9 AMK.