As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) SHORTLY AFTER TAKEOFF, FLIGHT CREW NOTICED ERRONEOUS INDICATIONS ON NR 1 PROP WHICH GRADUALLY WORSENED AND BECAME UNCONTROLLABLE, PEC CAUTION, AND CREW SHUTDOWN ENGINE IAW E&A CHECK LIST. DECLARED EMERGENCY AND RETURNED TO FIELD. OVERWEIGHT LANDING AND EXCESSIVE BRAKING INSPECTIONS REQUIRED.