What was found
RIGHT HAND HORIZONTAL STABILIZER, THE FORWARD UPPER MOUNT BUSHINGS PLATING IS WORN. REMOVED FORWARD UPPER MOUNT BUSHINGS AT RIGHT HAND HORIZONTAL STABILIZER IAW BOEING SERVICE BULLETIN 737-55-1074. FIG. 4 PAG.1 TO 3. REV. 2 DATE, JULY 21/2017, PART 3, PERMANENT REPAIR STEP 5. INSPECTED THE JOINT, IAW EAR #03 RESPONSE STEP 2, PER SB 737-55-1074 REV 2: PART 3, PERMANENT REPAIR STEP 6. CORROSION NOTED. ACCOMPLISHED FILLING THE REPORT FORM FOR AFFECTED JOINT AS PER 737-NG-FTD-55-13002, JOINT DIMENSION REPORT IAW EAR #08 RESPONSE STEP 2. PERFORMED DAMAGE REMOVAL OF THE CORROSION IN THE BARE AREA ONTO THE RHS HOR. STAB. FRONT SPAR UPPER LUG (BORE) UP TO NOMINAL SIZE DIAM: 1.326", IAW EAR ITEM #08 ENG RESPONSE STEP 6 & 8, PER BOEING SB 737-55-1074 FIG. 5.