What was found
STRONG PLASTIC ODOR IN COCKPIT DESCENDING THROUGH 21000FT WITH THRUST IDLE. SELECTED XBLEED OFF AND PACK 1 OFF AND ODOR DISSIPATED COMPLETELY.-PERFORM TSM 05-50-00-810-831. RAN PACK 1&2 & INSPECTED FOR CONTAMINATION I.A.W AMM 21-51-00. FOUND NO EVIDENCE OF CONTAMINATION. PERFORMED ENG. RUN #1 & #2 NO ODOR NOTED WORK DONE I.A.W AMM 71-00-00. AS PRECAUTIONARY R&R RECIRCULATION FILTERS I.A.W AMM 21-21-41. CONTINUE ON L/P 3106321-2