What was found
DURING CLIMB OUT OF ORD MINOR SMELL OF POSSIBLE OVERHEATED PLASTIC AND OR RUBBER SEEMINGLY COMING FROM OVER #1 PACK. SMELL WENT AWAY RATHER QUICKLY NO ABNORMAL MESSAGES OR INDICATIONS OTHERWISE. ON APPROACH INTO GSP SMELL RETURNED STRONGLY AND PACK STRUGGLED TO COOL COCKPIT SIGNIFICANTLY AT THE GATE. WE RECEIVED A PACK 1 OVERHEAT CAUTION. NO EMERGENCY DECLARED-C/A-PERFORMED #1 ACM REMOVAL AND ADDITIONAL INSPECTION ACTIONS IAW EO NUMBER EM-2100-048. OPS CHECK GOOD. LEAK CHECK GOOD. MEL ITEM RESTORED. C/W ETN-EM-72-034 ODOR EVENT T/S FOUND PACK 1 ACM DAMAGED. DEFERRED PER MEL 21-30.