As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED BURNING ODOR IN FLIGHT COMPARTMENT. VERY SLIGHT HAZE IN CABIN WHEN ENG ANTI ICE SELECTED ON. TURNED OFF ANTI ICE. FOUND APU INLET AREA WET WITH HYDRAULIC FLUID. REMOVED, CLEANED AND RE-INSTALLED APU INLET. PERFORMED WC 4950-2215 MINI DUCT BURNOUT. NO SMOKE AND/OR ODOR PRESENT.