What was found
WHEN ATTEMPTING TO START NR 2 ENGINE, STARTER SPUN, BUT ENGINE DID NOT ROTATE. FOUND THE SPLINED ADAPTER STRIPPED INSIDE OF GEARBOX. REPLACED SPLINE ADAPTER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHEN ATTEMPTING TO START NR 2 ENGINE, STARTER SPUN, BUT ENGINE DID NOT ROTATE. FOUND THE SPLINED ADAPTER STRIPPED INSIDE OF GEARBOX. REPLACED SPLINE ADAPTER.