As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/CMH - FLT 6289 - DURING CLIMB AT 1800 HOURS ON 4-20-97, MADE AN UNSCHEDULED LANDING AT IAD DUE TO LT RPM MAX AT 98.4 PERCENT. AIRCRAFT WENT TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND ADJUSTED X-SCREW ON FUEL CONTROL, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (X)