As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4610, CREW REPORTED BURNING ODOR/FUMES IN COCKPIT AND CABIN. AFTER LANDING, AIRCRAFT REMOVED FROM SERVICE. FOUND APU BLEED TO BE THE SOURCE OF BURNING ODOR, APU PLACED ON MEL 4901. REMOVED AND REPLACED APU IAW WC 49-800-05. OPS CHECK GOOD. NO DEFECTS NOTED AT THIS TIME. AIRCRAFT RETURNED TO SERVICE.