What was found
AIRCRAFT PERFORMED AN UNSCHEDULED LANDING, HYDRAULIC LEAK ON RT SYSTEM. DURING MAINTENANCE REVISION, HYDRAULIC LEAK WAS DETECTED ON REAR CARGO COMPARTMENT AND HYDRAULIC FLEXIBLE LINE WAS INSTALLED TO THE RUDDER CONTROL SHUTOFF VALVE IAW MM 20-12-04, TEST CORRECT. DURING OVERNIGHT SERVICE, HYDRAULIC FLEXIBLE LINE WAS REPLACED AND SYSTEM WAS TESTED IAW MM 27-20-09, ALL CORRECT.