What was found
DISCREPANCY: EXPERIENCED AN OIL FILTER BYPASS ON NUMBER TWO ENGINE ON CLIMB OUT FROM GEG. THE LIGHT CAME ON AT 17,000 FEET. ALL NUMBER TWO ENGINES INSTRU. WERE WITHIN NORMAL OPERATING PARAMETERS. NOTIFIED ATC OF PROBLEM AND DECLARED AN EMERGENCY. PERFORMED APPROPRIATE CHECKLISTS AND SHUT NUMBER TWO ENGINE DOWN. OIL PRESSURE REMAINED AT 20 PSI. THE A/C LANDED AT PDX WITH OUT ANY FURTHER DIFFICULTIES. CORRECTIVE ACTION: PERFORMED INSPECTION IAW BOEING M/M 72-00. ENG MAINTAINED POSITIVE OIL PRESSURE. OIL FILTERS WAS REMOVED AND INSPECTED. NO DEFECTS NOTED. PERFORMED AN ENGINE RUN IAW BOEING M/M 7200. A/C RETURNED TO SERVICE.