As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, NR 2 AIR CONDITIONING PACK PRODUCES SMOKE AND BURNING ODOR AFTER A FEW MINUTES OF OPERATION. MAINTENANCE INSPECTED AND PLACED SYSTEM ON MEL, AIRCRAFT RELEASED IAW MEL 21-51-00, UNDER PLACARD NUMBER 024810. AIRCRAFT RETURNED ON FLIGHT 2433 LATER IN THE DAY AND MAINTENANCE PERFORMED OPERATIONAL CHECK OF THE NR 2 AIR CONDITIONING PACK COOLING SYSTEM IAW EMB145 AMM 21-50-00. OPS CHECKED GOOD, NO SMOKE OR BURNING ODOR NOTED. MEL CLEARED AND AIRCRAFT RELEASED FOR SERVICE.