What was found
DESCENDING THROUGH 18000FT, ODOR IN COCKPIT NOTICED BY PILOTS. SMELL DISSIPATED AFTER PACK 1 TURNED OFF.-PERFORMED ENG NR 2 RUN IAW AMM 71-00-00, ISOLATED PACK'S BLEED SYS IAW AMM 36-11-00. NO FUME DETECTED IN FLT DECK OR CABIN AT THIS TIME. A/C OK TO CONTINUE SERVICE.