As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/ORF - FLT 6383 - DURING CLIMB AT 1640 HOURS ON 12-3-98, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO LT HYDRAULIC LP COCK WILL NOT INDICATE OPEN. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND RE-LAMPED HYDRAULIC LP COCK INDICATOR, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (X)