As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 A/C PACK EMITTED BURNING TYPE ODOR ALONG WITH EXCESSIVE NOISE. INSPECTED ACM IAW AMM 21-00-00 AND DETERMINED ACM TO BE AT FAULT. CONDITIONAL (SMOKE) INSPECTION ACCOMPLISHED IAW AMM 05-51-50. NR 1 ACM PACK INOPERATIVE, TRANSFERRED TO DMI NR 23431, PER MEL 21-3, CAT C PLACARD INSTALLED. (DEFECTIVE ACM DATA: P/N 719238-9, S/N JL27714, TSO 3025:13 AND CSO 607)