As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRANSMISSION GEARSHAFT SPLINES SEVERLY WORN. SUSPECT CAUSE DUE TO LENGTH OF CALENDAR TIME INSTALLED INDICATING BREAKDOWN OF THE LUBRICANT. PERIOD OF INSTALLATION WAS 13 YEARS. RECOMMEND A CALENDAR LIMITATION OF 4 YEARS AS WELL AS THE EXISTING HOURLY FREQUENCY (TO SUNGEAR).