As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
8869B FLT 4224 MEM-FSM SMOKE SMELL IN THE CABIN ON THE GROUND. NO EMERGENCY WAS DECLARED. FOUND TO BE RT PACK CAUSING THE ISSUE, MAINTENANCE DEFERRED RT PACK IAW MEL 21-51-01 CATAGORY C. REF TL-215864-2011, DEF-0497794-2011. NO PRIOR HISTORY.