What was found
COCKPIT ODOR - ENROUTE AT FL 400 WE NOTICED A PLASTIC/ACRYLIC TYPE SMELL IN THE COCKPIT. ONE OF THE PAX INDICATED THAT SHE ALSO NOTICED A SMELL IN THE CABIN. NO SMOKE WAS EVER DETECTED IN THE AIRCRAFT.///SIGN-OFF//TROUBLESHOT SMELL IN AIRCRAFT. PER NETJETS THIS SMELL WAS NOTICED IN THE PAST AND AVIONICS FAN WAS THE CAUSE. PERFORMED FIM 21-20-00-810-801A PROCEDURE AS DIRECTED BY EMB CONTACT CENTER. WE WERE TOLD TO REMOVE AND REPLACED THE FAN. CALLED TECH SUPPORT THEY SAID NOTHING ELSE COULD BE TESTED. REF: EMB PHENOM 300 AMM, CHP. 31-41-09. REMOVED AND REPLACED AVIONICS BLOWER FAN WITN NEW ASSEMBLY. OPERATIONAL CHECK GOOD AT THIS TIME. REF: EMB PHENOM 300 AMM, CHP.31-41-09. PERFORMED WINDSHIELD HEAT FOR A SHORT TIME,. NO SMELLS NOTED.