As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 ENGINE AT FLT LEVEL 330 STARTED TO VIBRATE THEN DROPPED TO 70 PERCENT N1. MOVING THRUST LEVER HAD NO EFFECT. AFTER APPROX 1 MINUTE OIL PRESSURE LIGHT ILLUMINATED AND OIL PRESS INDICATES 3 PSI. ENG SHUTDOWN PROCEDURE ACCOMPLISHED. T/S IAW MM 71-00-00 NO FAULTS FOUND. R & R PUMP REF LP A036743- 1M. MEC REPLACED REF MM 73-21-10. ENG ADJUSTED & TESTED GOOD REF MM 73-21-30. NO LEAKS OR FAULTS NOTED AT THIS TIME. ACFT WAS GROUNDED.