What was found
DIAGNOSTIC REPORTS NR 1 ENGINE S/N 804245 HAS HAD AN INCREASE IN OIL PRESSURE. FOLLOWUP ACTION REQUIRED. ETOPS. GROUNDED - YES. REMOVED AND REPLACED OIL DAMPENING TUBE & NIPPLE IN TRF ON NR 1 ENG REF AMM 72-56-00-000-801-F00. PERFORMED NR 1 ENGINE IDLE LEAK CHECK PER AMM 71-00-00-700-801-F00. ACCOMPLISHED ENGINE POWER RUN REFERENCE AMM 71-00-00-700-823-F00 AS APPLICABLE. RESULTANT NR 1 / NR 2 OIL PRESSURE INDICATION OF 47 / 51 PSID AT 90% N2 IS WITHIN PUBLISHED MANUAL LIMITS PER AMM 71-00-00-800-806-F00.