As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/GSO - FLT 6125 - DURING CLIMB AT 0650 HOURS ON 12-1-98, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO LT HYDRAULIC PUMP FAILURE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED HYDRAULIC PUMP. OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (X)