What was found
(CAN) NOSE GEAR DOOR TORQUE TUBES REMOVED FOR INSPECTION DUE TO THE PROMPTING OF A SERVICE DIFFICULTY ADVISORY. THE CONDITION PREDICTED IN THE ADVISORY (CORROSION) WAS FOUND TO EXIST IN A FAIRLY ADVANCED STAGE, PARTICULARLY AROUND THE TAPER PINS AND HOLES. THESE TUBES HAVE BEEN MODIFIED WITH GREASE FITTINGS TO FACILITATE FILLING THE TUBES WITH GREASE, HOWEVER, AN INCOMPLETE FIL HAD IN FACT MADE THE PROBLEM WORSE. THE PLUGS OF GREASE HAD IN FACT CREATED POCKETS WHERE MOSITURE WAS TRAPPED, WORSENING THE PROBLEM. NEW TUBES WERE FABRICATED AND INSTALLED WITH NEW HARDWARE. AS THE ADVISORY POINTS OUT, FAILURE DURING WATER LANDING COULD HAVE FATAL CONSEQUENCES IF THE DOOR COLLAPSE.