What was found
FLIGHT 5820. OKC TO CLE. DURING DESCENT THE FLIGHT CREW RECEIVED A HYDRAULIC 1 LOW QUANTITY MESSAGE ON EICAS AND VERIFIED THE MESSAGE THROUGH THE HYDRAULIC SYSTEM PAGE. THE FLIGHT LANDED IN CLE WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT HYDRAULIC SYSTEM UNDER HEAVY LOAD AND NO LEAKS WERE FOUND AS PER MM 29-10-00. THE HYDRAULIC SYSTEM WAS SERVICED PER MM 12-31-01 AND THE AIRCRAFT WAS RETURNED TO SERVICE. (A)