What was found
UNSCHEDULED STAB TRIM EICAS MESSAGE. RAN CHECKLIST AND REACTIVATED LEFT SIDE AND RIGHT SIDE STAYED OFF. PERFORMED STAB TRIM CONT SYSTEM TEST AS PER AMM TASK 27-41-00-715-007 SYSTEM TEST PASSED. PERFORMED STAB TRIM SYSTEM TRIM TEST TASK 22-22-00-745-001 STAB TRIM PASSED. FCC RIGHT BITE TEST PASSED AS PER AMM 22-11-00. VISUAL INSPECTION OF STAB JACK SCREW C/W OPS CHECK GOOD. EICAS MESSAGE CLEARED. AIRCRAFT RELEASED FOR FLIGHT.