As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENGINE START RIGHT ENGINE OIL PRESSURE DISCRETE LIGHT INTERMITTENT, AICRAFT RETURNED TO GATE WHERE MAINTENANCE GROUNDED AIRCRAFT UNTIL REPAIRED. REMOVED AND REPLACED RT ENGINE LOW OIL PRESSURE WARING SWITCH, PER AMM 79-33-01. OPERATIONAL TEST C/W NO DEFECTS NOTED. ENGINE RUN UP C/W FOR 5 MIN IN IDLE POWER RT ENGINE LOW OIL PRESS LIGHT WORKING FINE. A/C RELEASED REMAINS ETOPS 180.