As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN CABIN AND COCKPIT. NO CAS MESSAGES SHOWN. LOUD UNDULATING GRINDING NOISE FROM LEFT PACK. GAINED ACCESS AND REMOVED DEFECTIVE ACM P/N GG431-2010-3 S/N 01089 AND INSTALLED CUSTOMER SUPPLIED REPAIRED ACM P/N GG431-2010-3 S/N 00201. REINSTALLED ALL ACCESS GAINED FOR MAINTENANCE AND PERFORMED GOOD OPERATIONS/LEAK CHECK WITH NO DEFECTS NOTED AT THIS TIME. WORK DONE, IN REF GLOBAL 6000 AMM 21-52-09.