What was found
EN ROUTE FROM KWA TO HIK, AN ODOR WAS SENSED IN THE COCKPIT EMITTING FROM THE COCKPIT AIR CONDITIONING UNIT. THE FLIGHT CREW SECURED THE AIR CONDITIONER AND THE ODOR SUBSIDED. THE FLIGHT CONTINUED TO HIK FOR AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE AIR CONDITIONER WHICH REVEALED A LOOSE COMPRESSOR DRIVE BELT AND A CLOGGED DRAIN LINE. MAINTENANCE ADJUSTED THE DRIVE BELT, CLEAR THE DRAIN LINE AND PERFORMED AS SUCCESSFUL OPERATIONAL CHECK IN ACCORDANCE WITH THE COMPANY MAINTENANCE MANUAL. THE AIRCRAFT WAS RETURNED TO SERVICE.