As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RT CTR FUEL PUMP LIGHT ILLUMINATED WITH ASSOCIATED EICAS MSG. APPROX 30 MINUTES LATER RT ENG BEGAN SURGING. RT ENG BLEED LIGHT ILLUMINATED WITH EICAS MSG & STATUS MSG FOLLOWED, RT ENG SPEED CARD. EMER DECLARED RETURNED & LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. RESET RT CTR FUEL PUMP & REPLACED RT ENG SPEED CARD. SYS GND CHECKED NORMAL OPERATION CLOSED.