X-Plane 9.70 Spad S.XIII. SPAD S.XIII MM S.4523 flown by Eddie Rickenbaker, 94 Aero Sqd, American Expeditionary Air Force, 1918. Eddie Rickenbaker is the top italian ace of WWI, he scored 26 victories.This aircraft was designed and tested using X-Plane 9.70. By Paolo Matricardi. Animated pilot by Bertrand Augras. Sounds by Chris Wraight.