What was found
ON BASE TURN INTO MCO FA CALLED UP FOR POSSIBLE FUME EVENT .-REF TSM 05-50-00-810-831-A. OPERATED ALL SOURCES OF BLEED WHILE ISOLATING 1 AT A TIME (PACK1, PACK2, ENG1 BLEED ENG2 BLEED) NO SMELL NOTED. VERIFIED HISTORY. NO PREVIOUS DISCREPENCIES. REF AMM 71-00-00 FOR ENG RUN. A/C OK FOR SERVICE AT THIS TIME.