What was found
AT 200 FEET DURING CLIMBOUT, A SPEED TRIM FAIL MESSAGE ILLUMINATED AT 8000 FEET. WHEN AUTOPILOT WAS ENGAGED A STAB OUT OF TRIM MESSAGE ILLUMINATED. MANUAL TRIM FUNCTIONED INTERMITTENT. ACFT GROUNDED. ACCOMPLISHED DFCS FLT FAULT REVIEW, MESSAGES 22-11177, 22-11186, 22-11161 LOGGED, IAW FIM 22-11 TASK 801. VERIFIED DEFECT, STAB TRIM ELECT ON F/O AND CAPTAIN SIDE INTERMITTENT, LRU TEST FOR SPEED TRIM WOULD NOT PASS. REMOVED & REPLACED STAB TRIM MOTOR IAW AMM 27-41-71. ACCOMPLISHED STAB TRIM MOTOR TEST IAW AMM 27-41-71-700-801, OPS CHECKED OK. ACCOMPLISHED AUTO PILOT STAB TRIM MOTOR TEST IAW AMM 22-11-81-710-801, & LAND VERIFY. ALL TESTS PASSED.