What was found
OIL PRESSURE ENG 1 STEAD Y DROP IN FLIGHT FL340. DIVERTED AT 7 P ERCENT. AIRCRAFT DIVERTING FOR OIL QTY DECREASE. REMOVED MCD OIL SCREENS IAW AMM79-21-05-401. SMALL AMOUNT OF TEFLON MATERIAL FOUND IN FWD SUMP SCREEN (#3 BEARING). REMOVED & CLEANED SCREEN IAW AMM 79-00-00-00-200-804. PER PARAGRAPGH 4. (D)-(E). REMOVED FWD SUMP SCAVENGE TUBE AND CONFIRMED NO BLOCKAGE OR MATERIAL FOUND IN TUBE OR SCAVENGE PUMP. ACCMPD TEST 3B IAW PRINCIPAL ENGINEER AND TOMC, 74-94% N1 SETTINGS. ALL PARAMETERS NORMAL. EXTERNAL LEAKS OR OIL LOSS DURING 20 MINUTE HIGH POWER RUN AT AMM71-00-00-700-823-FOO AND AMM79-21-01-000-801. NO EVIDENCE.