What was found
MINOR FUME EVENT ON CLIMBOUT THROUGH 15000 DISSIPATED BEFORE ANY CREW ACTION , COCKPIT ONLY. STRONGER FUME EVENT ON DESCENT ISOLATED PACK 1 FUMES DISSIPATED ODOR SIMILAR TO BURNING PLASTIC NO CABIN ODOR /FUME EVENT. -PERFORMED TSM PROC 05-50-*00-810-831-A. ODOR REPORTED IDENTIFIED TO PACK 1. DUE TO AC HISTORY /FLIGHT CREW ISOLATION PROC PACK 1 PLACED ON MEL. INSPECTED ELEC CIRCUIT SND EQUIP. NO DEFECTS NOTED . NO BURNING PLASTIC ODOR DETECTED. A/C OK TO CONTINUE SERVICE IAW AMM 24-00-00-200-03A