As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT RT ENGINE N1, SPOOLED DOWN, ITT INCREASED TO 800 DEGREES, AND A BANG WAS HEARD. N1 DID NOT RESPOND TO THRUST LEVER ADVANCEMENT. ENGINE WAS LEFT AT IDLE UNTIL LANDING. REMOVED AND REPLACED RT ENGINE PER CRJ MM 71-00-00. OPERATIONAL CHECK GOOD.