What was found
LEFT OIL PRESSURE DROPPED TO 20 PSI. OIL ONE ANNUNCIATOR ILLUMINATED. SHUTDOWN NR 1 ENGINE IN-FLIGHT. SERVICED ENG OIL & STARTED ENG. VERIFIED OIL TO BE LEAKING OIL PUMP DRAIN. R & R ENG OIL PUMP & NR 1 HYD PUMP WITH OVERHAULED UNITS. SERVICED ENG OIL, STARTED ENG, & BLED HYD SYS. RAN ENG AT TAKEOFF POWER FOR 3 MINUTES, THEN AT MAX CRUISE FOR 10 MINUTES, NO LEAKS NOTED AT THIS TIME. COMPLETED SOAP SAMPLE & OIL FILTER CHANGE. CHECKED CHIP DETECTOR, NO DEBRIS FOUND. LEAKED CHECKED FILTER & CHIP DETECTOR, NO LEAKS NOTED AT THIS TIME. SERVICED OIL AS NECESSARY MM 79-20-04, MM 29-11-01-900-801.