As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 8015 - OKC - ON CLIMBOUT, NR 2 ENGINE OIL OVERTEMP INDICATED FOLLOWED BY GRADUAL LOSS OF PRESSURE. ENGINE 2 IMPENDING BYPASS DISPLAYED ON EICAS. DECLARED EMERGENCY AND RETURNED FOR LANDING. OIL ON COWLING OF NR 2 ENGINE. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE. OPS CHECKED GOOD.