What was found
ELEVATOR CONTROLLER FEEL LOST AT FL 390 WITH LOSS OF FO AIRSPEED. PERFORMED ORH PROCEDURE UNRELIABLE AIRSPEED FO. REMOVED AND REPLACED #2 CENTRAL AIR DATA COMPUTER IAW MD-11 AMM 34-16-01-4 OPS CHECK NORMAL, PERFORM RETURN TO SERVICE ON FCC 1 AND 2 ,AUTO FLIGHT SYSTEM TEST IAW MD-11 AMM 22-00-00-5 ALL TEST PASSED, RESET 30 DAY LMM TIMER, OK FOR SERVICE.