As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE/CLE - FLT 3267 - RIGHT ENGINE T6 FLUCTUATES CONTINUOUSLY FROM 542 TO 648 DEGREES CELSIUS IN CRUISE. AIRCRAFT RETURNED TO CLE AND LANDED WITHOUT INCIDENT. CLE MAINTENANCE REMOVED AND REPLACED THE 4 AND 5 O'CLOCK POSITION T6 PROBES IAW PRATT & WHITNEY MM 72-01-60. OPERATIONAL CHECKS WERE GOOD. AIRCRAFT RETURNED TO SERVICE. (X)