As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT, BURNING ODOR FILLED CABIN FOLLOWED BY A PACK 2 FAIL MESSAGE. ODOR IMPROVED ONCE PACK 2 WAS OFF. PERFORMED AMM TASK 21-20-00-810-801-A, FOUND NR 2 A/C PACK AT FAULT. R & R NR 2 ACM DUE TO A BROKEN BLADE IAW AMM 21-51-05.