As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFTER TAKEOFF NAC TEMP FLASHING ON RIGHT ENG. TEMP UP TO 380.EGT RIGHT ENGINE 630. NAC TEMP REMAINS FLASHING AT 320 IN SLOWCRUISE. RT ENG MADE SURGING SOUND AT THRUST SET AT TAKEOFF. NO ASYMMETRIC THRUST FELT. AIRCRAFT DIVERTED TO TUL AND LANDED WITHOUT ISSUE. MAINTENANCE FOUND BLOWN DUCT AND REPLACED LH AND RH THRUST REVERSERS.