What was found
(CAN) IN CRUISE A BLEED AIR LEAK INDICATION WAS OBSERVED FOR THE RT ENGINE. THE ENGINE WAS SHUTDOWN AS A PRECAUTIONARY MEASURE. AN UNEVENTFUL LANDING WAS MADE. MAINTENANCE INSPECTION FOUND NO EVIDENCE OF A BLEED AIR LEAK. FURTHER INVESTIGATION SHOWED THAT A FIRE WIRE COUPLING WAS LOOSE IN THE RT WING. WHEN THE COUPLING WAS REMOVED IT WAS FOUND THAT A CRUSH WASHER WAS MISSING FROM THE ASSEMBLY. THE COUPLING WAS CLEANED, INSPECTED AND REASSEMBLED CORRECTLY WITH (2) CRUSH WASHERS. AFTER INSTALLATION THE FIRE WIRE ELECTRICALLY TESTED SATISFACTORY. THE AIRCRAFT WAS SUBJECT TO FULL ENGINE RUNS AND NO BLEED AIR LEAK WAS EVIDENT. ALL COCKPIT INDICATIONS WERE NORMAL. (TC NR 20070327011)