As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
Flight 5015 from CLT to GSP: After takeoff number two engine torque started to surge 5% after levers were set at 900 RPM. Aircraft returned to Charlotte and landed with no other problems. No emergency was declared. Maintenance removed and replaced the number two torque gauge. System ground run and ops checked good. Aircraft was returned to service.