What was found
TAXI BACK, OVERSPEED GOVERNOR TEST FAILED DURING GROUND RUN UP. PROP RPM WENT TO RED LINE. REMOVED AND REPLACED OVERSPEED GOVERNOR. ACFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
TAXI BACK, OVERSPEED GOVERNOR TEST FAILED DURING GROUND RUN UP. PROP RPM WENT TO RED LINE. REMOVED AND REPLACED OVERSPEED GOVERNOR. ACFT RETURNED TO SERVICE.