What was found
DISCREPANCY ENG NR 1 IS LOSING OIL. DURING CRUISE, PRECAUTIONARY ENG SHUT DOWN IN FLIGHT. CHECKLIST WAS PERFORMED WITH 3 GALLONS OF OIL REMAINING. WHILE CHECKING FOR LEAK ON NR 1 ENG FOUND SPLINE SEALING FIXTURE ON THE GEARBOX, LT HYD PUMP LOOSE & LEAKING. SECURED TIGHTENED SPLINE SEALING FIXTURE & MOUNTING BOLTS ON THE COVER OF LT HYD PUMP PAD COVER. SERVICED ENG OIL, PERFORMED ENG RUN BY FLIGHT CREW & CHECKED FOR LEAKS. NO LEAKS FOUND AFTER ENG RUN. LOG PAGE 44168 ITEM NR 2.