As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT , NOTICED A SHIFT IN DDT. COMPLETED AN ENGINE TREND WHICH SHOWED A DDT OF 64 DEG. ORH'D DDT REMAINED AT 64 DEG. NG RANGE OF 80-84% COULD NOT BE AVOIDED. RETURNED TO MSP. REPLACED RT ENGINE, SN OFF GE-E758742. SN ON GE-E785682.