What was found
STAB TRIM FAIL IN FLIGHT UPON INITIAL INSPECTION, FOUND STAB TRIM WOULD NOT MOVE WHEN OPERATING STAB TRIM WITH BOTH CAPT AND FO TRIM SWITCHES PERFORMED STABILIZER TRIM MOTOR TEST REF AMM 27-41-71-700-801. WHEN ATTEMPTING TO MOVE STAB TRIM MANUALLY USING STAB TRIM WHEEL HEAVY RESISTANCE AND BINDING WAS FELT EVEN WITH STAB TRIM CUTOFF AS A DIRECT RESULT ATTEMPTED TO RESET THE STM LOGIC, NO LUCK REF AMM 27-41 TASK 805. PERFORMED A GVI AND INSPECTED BOTH EE BAYS AND JACK SCREW COMPARTMENT FOR ANY OBVIOUS DEFECTS, NONE FOUND. REMOVED AND REPLACED STABILIZER TRIM MOTOR IN REF TO AMM 27-41-71/401. OPS CHECKS GOOD AND STAB TRIM FAIL LIGHT GOES OUT AS NORMAL WHEN IRS ALIGNS.PARTS USED: 29-2741-9-0011,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1390918 SN OFF 3365 MOTOR, STAB, HO OFF 29-2741-9-0011 3365 ON 29-2741-9-0013 0897