As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE EN ROUTE FROM ANC TO BET, THERE WAS A DROP IN TORQUE AND EGT ON THE RIGHT ENGINE. THE CREW DID AN AIR TURNBACK ANC. MAINTENANCE DETERMINED THAT THE P2T2 SENSOR FROZE DURING FLIGHT. MAINTENANCE THE COMPLIED WITH PARA B OF AD 97-15-10 BY COMPLYING WITH ALLIED SIGNAL SB TPE 331-73-0235. PARAGRAPH A OF THE AD WAS NOT APPLICABLE. (M)