As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, ALL FOUR FUEL FLOW INDICATORS WENT TO ZERO AND NUMBER FOUR EPR FAILED. THE CREW RETURNED TO DEPARTURE WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED BOTH FUEL FLOW POWER SUPPLY. OPERATIONAL CHECK GOOD IAW ATI ERH 71.01 AND ERH 70.01. AIRCRAFT WAS RETURNED TO SERVICE.