What was found
(CAN) FLIGHT CONTROL AILERON SERVO FAULT WITH ASSOCIATED UNCOMMANDED ROLL TO ABOUT 20 DEGREES, INDICATION LEFT AILERON B SERVO IN AMBER ON ELEVATOR/AILERON COMPUTER 1. CENTRALIZED D FAULT DISPLAY SYSTEM FAULTED B-MODE VALVE 33C23. REPLACED LT AILERON B SERVO, OPERATION CHECKED NORMAL.