As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO TAKEOFF SPOOLED ALL FOUR ENGINES; NR 1 ENGINE -0- OIL PRESSURE FOLLOWED BY ABNORMAL CHECKLIST. REMOVED AND REPLACED NR 1 OIL PRESSURE INDICATOR IN ACCORDANCE WITH M/M 79-32-0; OPERATIONAL CHECK IN ACCORDANCE WITH M/M 7100 FOUND NORMAL.