What was found
LHR CREW REPORTED SEVERAL EICAS MESSAGES DISPLAYED, HYD AUTO CONTROL R, AUTO SPEED BRAKE, DET FIRE CARGO AFT & CARGO HEAT BULK. EMERGENCY DECLARED FLIGHT RETURNED LHR LANDED WITHOUT INCIDENT. RESEATED A18, A4, A5,A6,A7, A8, & A17 CARD FILES. SYSTEM GROUND CHECKED NORMAL OPERATION CLOSED.