A B767-300ER ON APCH AT 2000 FT; 8 MI FROM RWY EXPERIENCED RESTRICTED/JAMMED ELEVATOR CTL. ACFT ATTITUDE SET WITH STAB TRIM. LANDED UNEVENTFULLY.

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8 MI 2000 FT ILS; COPLT COMMENTED THAT YOKE FEEL WAS NOT RIGHT. I AGREED THAT ELEVATOR MOVEMENT WAS RESTRICTED/JAMMED. STAB TRIM WORKED; AUTOPLTS SELECTED OFF WITH DISENGAGE BAR; HUD PRESSURE NORMAL; NO WARNING; CAUTION; OR STATUS MESSAGES -- APPLIED ABOUT 50 LBS OF FORCE TO YOKE WITH NO RESULTS. ACFT ATTITUDE WAS SET WITH STAB TRIM; ABOUT 8 DEGS UP; GLIDESLOPE FLOWN WITH POWER. ACFT TOUCHED DOWN IN A FLAT ATTITUDE; UNEVENTFUL ROLLOUT AND TAXI IN. LNDG PERFORMED BY COPLT. ON TAXI IN; STILL UNABLE TO MOVE ELEVATORS. MAINT MET FLT.CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED MAINT FOUND THE CAPT'S ELEVATOR CTL CABLES BLOCKED BY ICE AT THE PRESSURE DOME CABLE FEEDTHROUGH FITTINGS. THE TRASH CONTAINER IS LINED WITH A PLASTIC BAG AND IN THIS INCIDENT THE BAG WAS TORN AND WATER LEAKED ON TO THE FLOOR; FLOWING TO THE CAPT'S ELEVATOR CTL CABLES RUNNING TO THE PRESSURE DOME AND FREEZING AT THE CABLE FEEDTHROUGH FITTINGS. A CURRENT MANUFACTURER'S SERVICE BULLETIN ADDRESSES THIS PROB OF LEAKING GALLEY DRAIN LINES AND ANY OTHER WATER LEAKAGE IN THE AFT GALLEY AREA LEADING TO ELEVATOR CTL CABLE FREEZING. THE SERVICE LETTER STATES AN AUTOPLT CAUTION MESSAGE WILL BE DISPLAYED IF RESISTANCE FROM THE CTL CABLE IS TOO GREAT. HOWEVER; IN THIS INCIDENT; THE AUTOPLTS WERE DISCONNECTED. A SUBSEQUENT SERVICE LETTER WAS RELEASED THAT REQUIRED DRILLING FLANGED HOLES IN THE CABIN FLOOR TO ALLOW WARM CABIN AIR ONTO THE CAPT'S ELEVATOR CTL CABLES; HOWEVER; THIS ACFT WAS MISSED AND THE SERVICE LETTER NOT ACCOMPLISHED.CALLBACK CONVERSATION WITH RPTR ACN 719587 REVEALED THE FOLLOWING INFO: THE CAPT'S ELEVATOR CTL CABLES WERE RESTRICTED BY ICE AT THE PRESSURE DOME AND WAS FROM AN AFT GALLEY WATER LEAK. ACFT WAS LANDED USING STAB TRIM.