As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: AT FL390, N1 AROUND 89%. REVERSE VIDEO INDICATION APPEARED ON L OIL QUANTITY. AFTER ABOUT 5 MIN, THE L OIL PRESSURE BEGAN FLUCTUATING +/- 7PSI. ENGINE NUMBER 1 UPPER DISPLAY BRIEFLY DISPLAYED FLASHING AMBER INDICATIONS; AIRCRAFT DIVERTED TO AND LANDED SAFELY AT PNS. REMOVED AND REPLACED AFT OIL SUPPLY TUBE. PER MCM 08L40072013.