As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURN BACK DUE TO PACK TEMP HIGH CAS AND SMOKE IN COCKPIT DURING CLIMB. AIRCRAFT LANDED WITHOUT INCIDENT AT KMCO. FOUND ACM DRIVE SPOOL SEIZED. REPLACED ACM ASSEMBLY IAW BD 100 AMM 21-52-13. OPS AND LEAK CHECKS SATISFACTORY IAW AMM 21-52-00.