What was found
UPPER AND LOWER TRANSMISSION COUPLING SPLINE SHAFT HAS ONE SPLINE CRACKED NEAR OUTER END OF SPLINE. REPLACED CRACKED SHAFT WITH SERVICEABLE UNIT. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UPPER AND LOWER TRANSMISSION COUPLING SPLINE SHAFT HAS ONE SPLINE CRACKED NEAR OUTER END OF SPLINE. REPLACED CRACKED SHAFT WITH SERVICEABLE UNIT. (X)