As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ACRID FUMES STARTED DURING TAKEOFF. CABIN TEMP WAS IN MANUAL IAW MEL BUT TEMP INDICATED COOL. FUMES SEEMED TO DISSIPATE AFTER TURNING OFF RIGHT PACK. CHANGED COALESER SOCK ON THE RT SIDE. FOUND CRACKED DUCT RT SIDE DOWN STREAM OF TEMP CONTROLLER VALVE. DUCT HAD 5" OPEN CRACK & RT WATER SEPERATOR FOUND PLUGGED. REMOVED AND REPLACED DUCT ASSY.