What was found
FAS REPORTED STRONG FUME SMELL IN AFT OF AIRPLANE. RAN COM 3.226.1 TO ELIMINATE FUMES AND COULD NOT ISOLATE. FAS REPORTED FEELING SYMPTOMS OF EXPOSURE REQUIRING A DIVERSION. ALSO RAN AIR PACK 1+2 FAULT-REF TSM 05-50-00-810-831. INSPECTED ENGINES & APU COMPARTMENT, NO SIGNS OF OIL LEAKS OR LEAKAGE. SAME RESULTS WHILE RUNNING THEM, NO FINDINGS. OPERATED ALL SOURCES OF BLEED (ENGINE/APU) WHILE ISOLATING THEM ONE AT A TIME USING AEROTRACER. NO ODORS NOTED.