As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING, THE CREW REPORTED THAT THE NR 1 ENGINE OIL PRESSURE DROPPED ON FINAL APPROACH TO 17 PSI WITH N1 AT 67 PERCENT. MAINTENANCE REMOVED AND REPLACED THE NR 1 ENGINE AGB/IDG CARBON SEAL. OIL LEAK AND CONSUMPTION CHECKS WERE GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.