What was found
CAPTAIN REPORTED THAT AFTER LANDING, THE LT HYDRAULIC SYSTEM WAS LOST AND LT REVERSE REMAINED EXTENDED. AIRCRAFT WAS TOWED TO PLATFORM AND RECHARGED OF HYDRAULIC LIQUID, DETECTING A LEAK IN THE LT HYDRAULIC REVERSE VALVE CAP. THE LT HYDRAULIC REVERSE VALVE WAS REPLACED IAW MM 78-31-04, TESTED CORRECT. DURING OVERNIGHT CHECK, HYDRAULIC SYSTEM WAS TESTED BY LEAKS IAW MM 78-31-04, ALL CORRECT.