As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG BURNING SMELL IMMEDIATELY AFTER TAKEOFF. SMELL DISSIPATED AFTER 5 MIN. ODOR BEGAN IN CABIN. DECLARED EMERGENCY AND RETURNED TO BASE. FOUND ACM TURBINE BLADES DISINTEGRATED. REMOVED AND REPLACED RT ACM PER AMM 21-51-05. REF LP 310785 ITEM NR 1. OPS CHECK OF RT ACM REQUIRED TASK 21-51-00-710-801.