As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3268 - DURING CRUISE, CREW NOTED A THUMPING NOISE FROM THE RT ENGINE, FOLLOWED BY A LOSS OF 200 RPM. THE FLIGHT CONTINUED TO MSP WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE RT PROP GOVERNOR. THE SYSTEM OPERATED SATISFACTORILY. (W)