What was found
(CAN) AP SHOWS TOO SLOW REACTION TO PITCH DEMANDS OF FD. CANNOT FOLLOW FD PITCH BAR. SIGNIFICANT PROBLEMS ARE MARKED DURING CLIMB WITH EVENT BUTTON OF FDR AT 1338 UTC PASSING FL160. SECOND FDR BUTTON PUSH AT 14:18 ALT HOLD FAIL. CORRECTIVE MAINTENANCE ACTION: T/S PERFORMED.FOUND ELEVATOR SERVO U/S. ELEVATOR SERVO REPLACED IAW AMM 22-11-24-000/400-801 A01 REV 36. PART: ELEVATOR SERVO P/N: 622−,5027−,101 (TC# 20120126004)