As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT AT 12-13,000 FT THE NR 3 OIL FILTER BYPASS LIGHT ILLUMINATED. PERFORMED COM 2-72-19 ; 2-72-12 ; 2-28-4. RETURNED TO MMMZ. ALL ENGINE PARAMETERS NORMAL PRIOR TO SHUTDOWN OF NR 3 INFLIGHT. WINDMILLED ENGINE N 12 MINS. OIL PRESS +20 PSI. EMERGENCY WAS DECLARED.