As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LYH/IAD - FLT 918 - DURING APPROACH AT 1145 HOURS ON 3-14-97, AIRCRAFT MADE A SCHEDULED LANDING AT IAD WITH ONE DISCREPANCY WHICH WAS LT HYD RPESSURE DROPPED TO ZERO, AND RT HYD PRESSURE FLUCTUATED BETWEEN ZERO TO 800 PSI. AIRCRAFT WENT TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSP AND REMOVED AND REPLACED NON-RETURN CHECK VALVE, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (X)