As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED VIBRATION FROM FLOOR & BURNING ODOR WITH PACKS ON. FOUND LEFT PACK OVERHEATED. R & R LEFT ACM IAW AMM 21-51-10. PERFORMED OPS TEST OF THE AIR CONDITIONING SYS AND FOUND UNSATISFACTORY IAW AMM 21-51-00-710-801. LEFT PRSOV REPLACED IAW AMM 21-51-43. OPEN