As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT ENGINE NR 2 WENT TO 99.8 PERCENT NP WHILE IN CLIMB OR CRUISE. NP NEVER WENT ABOVE 100 PERCENT. THE ACFT RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT. THE ACFT WAS REMOVED FROM SERVICE. R & R ENGINE NR 2 PIU IAW JIC 61-21-82. THE OPS CHECK FOUND THE SYS WORKING PROPERLY. THE ACFT WAS RETURNED TO SERVICE.