What was found
RTFL UNDER AMBER ALERT DUE TO LOSS OF ELEVATOR CONTROL. POST FLIGHT REPORT SHOWS THS ACTUATOR POSITION ERROR 9CE REPORTED BY SEC1 ELAC 2. SUPPLEMENTAL DATA UPDATE TRIMMABLE HORIZONTAL STABILIZER (THS) ACTUATOR LOCKED UP AND WOULD NOT RESPOND TO INPUTS. WHILE FAULT TRACING PER TSM, FOUND THAT DISCONNECTING CERTAIN CONNECTORS ON THE THS ACTUATOR WOULD FREE UP THE MOTOR, SO SUSPECT THAT THS ACTUATOR ELECTRONICS ARE FAULTY. REPLACED THS ACTUATOR AND ALSO REPLACED ELAC 2 AS A PRECAUTIONARY MEASURE.