What was found
POSSIBLE HYDRAULIC LEAK FROM NO. 1 ENGINE STRUT DRAIN TUBE. ITEM M20: RESTRICTOR VALVE IN DOG HOUSE OF #1 ENGINE REQUIRES REPLACEMENT. REMOVED AND REPLACED "T" FITTING ON HYDRAULIC LINE IN AFT DOGHOUSE ON #1 ENGINE IAW AMM 20-11-00. PERFORMED LEAK CHECK IAW AMM 29-11-00, NO LEAKS FOUND AT THIS TIME. ITEM M20: REMOVED AND REPLACED RESTRICTOR VALVE IN #1 ENGINE DOGHOUSE IAW AMM 20-11-00. PERFORMED LEAK CHECK OF RESTRICTOR VALVE IAW AMM 29-11-00. NO LEAKS NOTED AT THIS TIME. P/N OFF: 9R3918, NSN.