As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6352 - IAD-SWF - DURING CLIMB-OUT, RETURNED TO IAD DUE TO THE LEFT ENGINE ONLY MAKING 99 PERCENT RPM AND THE RIGHT ENGINE WOULD ONLY MAKE 99.5 PERCENT RPM ON. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE ADJUSTED FUEL CONTROL SCREW 'X' ON BOTH ENGINES. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)