As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 4 ENGINE SHUTDOWN DUE TO OIL FILTER LIGHT AFTER TAKEOFF. AIRCRAFT RETURNED TO FIELD. *S/D* NR 3 BREATHER TUBE CRACKED FORWARD OF THE ATTACHMENT WELD FOR THE RING GROOVE, ALLOWING 15TH STAGE COMPRESSOR AIR INTO THE NR 3 BEARING COMPARTMENT. REPLACED BREATHER TUBE, OPERATION CHECKS NORMAL.