As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE FLYING, NOTICED THAT THE T5 OF THE NR 1 ENGINE WAS RUNNING APPROX 40-50 DREGREES HIGHER THAN IT HAD BEEN RUNNING AT CRUISE POWER SETTINGS. AFTER LANDING BACK AT THE BASE, PERFORMED AN ACCELERATION BLEED VALVE CHECK IAW THE CHECKLIST. WHEN THE CIRCUIT BREAKER WAS PULLED THERE WAS NO CHANGE IN THE T5. A LOG BOOK ENTRY WAS MADE.