What was found
F/O YOKE IS APPROXIMATELY 5 LT (DOWN) WHEN IT SHOULD BE FULLY NEUTRAL (LEVEL). NO DIFFERENCE WHEN EITHER AUTOPILOT SELECTED. ACFT IS TRIMMED. PERFORMED OPS TEST OF AILERONS IAW AMM 27-10-00-5-0. FOUND ALL NORMAL. PERFORMED FCC 1 AND FCC 2 CONTROL WHEEL SYS TEST IAW AMM 22-00-06-5. TEST PASSED. PERFORMED FCC-1 AND FCC-2 AILERON SYS TEST IAW AMM 27-13-00-5. TEST PASSED. ACFT CAT STATUS DOWNGRADED. ACFT OK TO CONTINUE SERVICE.