What was found
AIRCRAFT IN BASE MAINTENANCE: LEFT HAND ELEVATOR TAB CONTROL MECHNISM RETURN SPRINGS LOWER ATTACHING POINTS HAS EVIDENCE OF CORROSION. REMOVED AND REPLACED AFT LEFT HAND ELEVATOR TAB CONTROL MECHANISM RETURN SPRINGS LOWER ATTACHING POINT BUSHING, PERFORMED SATISFACTORY ELEVATOR AND ELEVATOR TRIM CONTROL SYSTEM OPERATIONAL TEST AND PERFORMED SATISFACTORY ELEVATOR TAB CONTROL SYSTEM OPERATIONAL TEST. PER B737NG AMM 27-31-34, PER B737NG AMM 27-31-00-700-815, AND PER B737NG AMM 27-31-00-710-801.