What was found
(CAN) IMMEDIATELY AFTER TAKEOFF AUTO THROTTLE FLIGHT MESSAGE. ALSO LOST AUTO PILOT, AUTO THROTTLE, FLIGHT DIRECTOR, AUTO PILOT NOT AVAILABLE, NO SPEED TARGET, FLIGHT MODE ANNUNCIATOR BLANK, AIRCRAFT RETURNED TO BASE. MAINTENANCE ACTION INVOLVED REPACKING FLIGHT CONTROL PRIMARY AND SECONDARY COMPUTERS NR1 & NR2 RESET FLIGHT MANAGEMENT GUIDANCE AND ENVELOPE COMPUTER AND FLIGHT CONTROL UNIT CIRCUIT BREAKERS. CENTRALIZED FAULT DISPLAY SYSTEM CHECK SERVICEABLE.