As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, CREW OBSERVED STRONG RUBBER BURNING SMELL. ECS PAGE SHOWED LEFT PACK AT 42C AND CLIMBING. CREW SET LOWER TEMP FOR BOTH COCKPIT AND CABIN. TEMP REVERSED AND HEAVY SMELL AND PACK TEMP WAS REDUCED. AIRCRAFT LANDED AT DESTINATION WITHOUT INCIDENT. REPLACED THE AIR CYCLE MACHINE IAW CL350 AMM 21-52-13. OPS CHECK SATISFACTORY.