As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK AUTO FAIL CAUTION MESSAGE DISPLAYED MOMENTARILY, FOLLOWED BY CABIN FILLING WITH VISIBLE SMOKE. TROUBLESHOOT RT PACK IAW FIM 216100. FOUND RT ACM INOPERATIVE CAUSING SMOKE. COMPLETED INSTALLATION OF ACM IAW MM 21-51-08. OPS CHECKED GOOD, LEAK CHECKED GOOD.