What was found
SFO - FLT 682 - AFTER TAKEOFF SFO DURING CLIMB-OUT WITH LANDING GEAR RETRACTED, LOST HYDRAULIC SYSTEM 3. ACCOMPLISHED ABNORMAL PROCEDURES, DUMPED FUEL, AND AIRCRAFT RETURNED TO SFO LANDING WITHOUT INCIDENT. REPLACED TRIM CYLINDER INTERLOCK FUSE. SERVICED HYDRAULIC SYSTEM 3. SYSTEM LEAK AND GROUND CHECKED NORMAL OPERATION. (M)