As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT TURN BACK, NR 2 ENGINE VIB 2.6 A/B CHANNELS AND LOW BAND DURING CLIMB EPR .580 VIBS ON TAKEOFF 2.1 EPR .430. FOUND ENGINE OIL OVERSERVICED. DRAINED 2 QUARTS, PERFORMED OIL IN DRUM TEST AND AVM SURVEY PER M11-71-16 AND MM 71-00-00. ALL CHECKS GOOD, OK FOR SERVICE. (M)