As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLT, BURNING ODOR COMING FROM LT PACK. BLEEDS ON ENGINE NO AIRFLOW OUT OF LT PACK. NO ODOR AND PACK AIR FLOW NORMAL WHEN BLEEDS ON. PERFORMED OPS CHECK OF LT PACK IAW AMM 21-51-00 AND FOUND NO DEFECTS AT THIS TIME. NO ODOR NOTED WITH ENGINE BLEED AIR AND APU BLEED AIR SELECTED. REMOVED PLACARD AND REMOVED FROM MEL. (K)