What was found
WITH AIR COMING OUT OF SIDE VENTS. UPPER DUCTS A BURNED ACRID SMELL AND BLUE-ISH SMOKE LIKE HAZE WAS OBSERVED IN CABIN (APU RUNNING, ENGINES OFF) FOUND HYD RESERVOIR LEAKING AT FWD UNION REPLACED CUT O-RING AND SVCD HYDRAULIC SYS. I/A/W CE560XL AMM 29-11-01 CLEANED OIL RESIDUE IN SUPPLY DUCT TO COALESCER BAG AND WASHED COALESCER BAG I/A/W CE560XL AMM 12-19-02. OPERATED ENVIROMENTAL CONTROL SYS. NO DEFECTS NOTED. INSP APU AND BOTH ENG PNEUMATIC DUCTS FOR OIL RESIDUE. NONE FOUND