What was found
DURING TRANSIT CHECK, IT WAS DETECTED MSG IN EICAS & STATUS OF FLIGHT CONTROLS & SPOILERS WERE NOT FOLLOWED THE COMMAND. PERFORMED REVISION AT FLIGHT CONTROLS SYS IAW DMC B787-A-27-61-18-00A-720A-A, DETECTING THE SPOILER ELEC MOTOR UNIT POSITIONS 4, 5, 10 & 11 WITH FAILURE. THE SPOILER ELEC MOTOR UNIT POSITIONS 4, 5 & 11 WERE REPLACED IAW DMC B787-A-27-61-18-00A-720A-A. THE ELECTRO MECHANISM ACTUATORS POSITION 4 & 11 WERE REPLACED IAW DMC-B787-A-27-61-16-00A-520A-A & DMC-B787-A-27-61-16-00A-720A-A. THE SPOILER ELEC MOTOR UNIT POSITION 10 WAS DEFERRED IAW MEL 27-61-02 CAT C & MSG NR AMX-AMX-15-0612-06B. THE SPOILER ELEC MOTOR UNIT POSITION 10 WAS REPLACED IAW DMC B787-A-27-61-16-00A-520A-A, DMC-B787-A-27-61-16-00A-720A-A & FIM DMC B787-A-27-50-F1-H9A-421A-A PROCEDURE WAS PERFORMED, NO CONFIRMING FAILURE.