What was found
YELLOW HYD SYSTEM FAILURE, NO FLUID LOSS OF ACCUMULATOR PRESSURE. PUMP RAN 20 SECONDS, PTU RAN 30 SECONDS, FOUND HYD LINE LEAKING. REMOVED AND REPLACED HYDRAULIC LINE IAW AMM 20-23-11-911-001, AND 20-23-11-917-001. PERFORMED NR 2 ENGINE IDLE AND LEAK CHECKED GOOD. ACFT OK FOR SERVICE.